NSF REU... · NSF REU DAY 2010 Interdisciplinary Research Building Galleria (IDRB) Wednesday, August 4th 2010 USF Research Park Agenda 10:00 a.m. to 11:00 a.m. Poster Set‐up 11:00

NSF REU DAY 2010 Interdisciplinary Research Building Galleria (IDRB)

Wednesday, August 4th 2010 USF Research Park

Agenda

10:00 a.m. to 11:00 a.m. Poster Set‐up

11:00 a.m. to 11:15 a.m. Welcome

Rafael A. Pérez, Ph.D.

Professor and Associate Dean, College of Engineering

Cheryl Kirstein, Ph.D.

Professor and Associate Dean for Research and

Scholarship, College of Arts and Sciences

11:15 a.m. to 1:00 p.m. Poster Viewing/Judging

11:30 a.m. to 12:30 p.m. Lunch

1:15 p.m. to 2:00 p.m. Closing Remarks and Awards Presentation

Karen Holbrook, Ph.D.

Senior Vice President, Office of Research & Innovation

2:30 p.m. to 3:00 p.m. Poster Breakdown

NSF REU in Computer Science & Engineering

Students and Faculty Research Mentors

Victoria Arendt Sergio Andres Beltrán

Christine Bringes Ángel Calderón

Nickalaus Clark Osvaldo Mangual Rodríguez

Juan José Marrón Monteserín Edwin M. Martínez Ávila

Dashawn Matias Kenneth Mendoza

Schatzi Miranda Larry Moore

Christian E. Placeres Rodríguez Demetrius Richardson

Emmanuel Rodríguez Héctor Tosado Jiménez

Khoa Tran

Program Directors

Miguel Labrador, Ph.D., Associate Professor, Department of Computer Science and

Engineering

Rafael A. Perez, Ph.D., Professor, Department of Computer Science and Engineering and Associate Dean for Academics

Faculty Research Mentors

Sean Barbeau, B.S., Research Associate, Center for Urban and Transportation Research Kenneth Christensen, Ph.D., Professor, Department of Computer Science and Engineering Dmitry Goldgof, Ph.D., Professor, Associate Chair, & Graduate Coordinator, Department of Computer Science and Engineering Lawrence Hall, Ph.D., Professor and Chair, Department of Computer Science and Engineering Miguel Labrador, Ph.D., Associate Professor, Department of Computer Science and Engineering Jay Ligatti, Ph.D., Assistant Professor, Department of Computer Science and Engineering Luther Palmer, Ph.D., Assistant Professor, Department of Computer Science and Engineering Xiaoning Qian, Ph.D., Assistant Professor, Department of Computer Science and Engineering Yun Sun, Ph.D., Assistant Professor, Department of Computer Science and Engineering

Alfredo Weitzenfeld, Ph.D., Visiting Professor, Department of Computer Science and Engineering, Professor Computer Engineering Department, Autonomous Institute of Technology (ITAM), Mexico Hao Zheng, Ph.D., Associate Professor, Department of Computer Science and Engineering

NSF REU in Sustainable Energy Alternatives and the Advanced Materials Florida Georgia Louis Stokes Alliance for Minority Participation


Christine Beazley Ismael Ríos

Jeremiah Browne Yohannes Samuel

Justin Carter María Sánchez

Arelys Colon Hayde Silva

Justin Hinson Curtis Thompson

Troy Mobley Cherita Young

Jasmine Pearcey

Program Directors

Sylvia W. Thomas, Ph.D., Assistant Professor, Department of Electrical Engineering Rudy Schlaf, Ph.D., Associate Professor, Department of Electrical Engineering & Director of Undergraduate Research, College of Engineering Faculty Research Mentors

Shekhar Bhansali, Ph.D., Professor, Department of Electrical Engineering Venkat Bhethanabotla, Ph.D., Professor and Chair, Department of Chemical and Biomedical Engineering John Kuhn, Ph.D., Assistant Professor, Department of Chemical and Biomedical Engineering Ashok Kumar, Ph.D., Professor, Department of Mechanical Engineering and Director, Nanotechnology Research and Education Center Gokhan Mumcu, Ph.D., Assistant Professor, Department of Electrical Engineering Rudy Schlaf, Ph.D., Associate Professor, Department of Electrical Engineering, Director of Undergraduate Research, College of Engineering Sylvia W. Thomas, Ph.D., Assistant Professor, Department of Electrical Engineering Jing Wang, Ph.D., Assistant Professor, Department of Electrical Engineering Thomas Weller, Ph.D., Professor, Department of Electrical Engineering and Associate Dean for Research, College of Engineering John Wolan, Ph.D., Associate Professor, Department of Chemical and Biomedical Engineering Mike Zaworotko, Ph.D., Professor, Department of Chemistry

NSF REU in Tampa Interdisciplinary Environmental Research


Lucas Ackerknecht Wainella Isaacs

Bárbara Araneda Caleb Jewell

Hildamarie Cáceres Meg Lee

Kassandra Costa Jillianne Matus

TaShae Harrison Heidi Nafis

Emily Henderson

Program Directors

Maya A. Trotz, Ph.D., Associate Professor, Department of Civil and Environmental Engineering Sylvia W. Thomas, Ph.D., Assistant Professor, Department of Electrical Engineering Faculty Research Mentors

Jeff Cunningham, Ph.D., Assistant Professor, Department of Civil and Environmental

Engineering

Sarina Ergas, Ph.D., Associate Professor and Graduate Coordinator, Department of Civil and

Environmental Engineering

Yogi Goswami, Ph.D., John and Naida Ramil Professor, Department of Chemical and

Biomedical Engineering

Foday M. Jawad, Ph.D., Assistant Professor, Department of Environmental and Occupational

Health, College of Public Health

David Lewis, Ph.D., Assistant Professor, Department of Integrative Biology

James R. Mihelcic, Ph.D., Professor and State of Florida 21st Century World Class Scholar,

Department of Civil and Environmental Engineering

Amy Stuart, Ph.D., Assistant Professor, Department of Civil and Enviromental Engineering,

Department of Environmental and Occupational health, College of Public Health

Maya A. Trotz, Ph.D., Associate Professor, Department of Civil and Environmental Engineering Daniel Yeh, Ph.D., Assistant Professor, Department of Civil and Environmental Engineering

Qiong Zhang, Ph.D., Assistant Professor, Department of Civil and Environmental Engineering

NSF REU in Applied Physics


Zephra Bell Christopher Persichilli

Christopher Chambers Advaith Rao

Jacob Duscha Andrew Ross

Justin Easley Susanna Todaro

Jahnieka Griffin Jennifer Trinh

Adam laizzi Bryant J. Vande Kolk

Travis Miller Aaron Zaubi

Jennifer Perry

Program Directors

Ivan Oleynik Ph.D., Associate Professor, Department of Physics

Michelle Chabot, Ph.D., Instructor, Department of Physics Faculty Research Mentors

Sagar Pandit, Ph.D., Assistant Professor, Department of Physics

Denis Karaiskaj, Ph.D., Assistant Professor, Department of Physics

Donald Haynie, Ph.D., Associate Professor, Department of Physics

Garrett Mathews, Ph.D., Associate Professor, Department of Physics

George Nolas, Ph.D., Professor, Department of Physics

Martin Muschol, Ph.D., Associate Professor, Department of Physics

Matthias Batzill, Ph.D., Assistant Professor, Department of Physics

Myung Kim, Ph.D., Professor, Department of Physics

Sarath Witanachchi, Ph.D., Professor and Associate Chair, Department of Physics

Xiaomei Jiang, Ph.D., Assistant Professor, Department of Physics

Dennis Killinger, Ph.D., Distinguished University Professor, Department of Physics

Ivan Oleynik, Ph.D., Associate Professor, Department of Physics

Lilia Woods, Ph.D., Assistant Professor, Department of Physics

Venkat Bhethanabotla, Ph.D., Professor and Chair, Department of Chemical and Biomedical Engineering

Index of Poster Presentations

NSF REU in Computer Science & Engineering

Presenter Title Page

Arendt, Victoria Feature Extraction from Pre‐Therapy PET/CT Scans in Patients with Lung Cancer

3

Beltrán, Sergio Andrés Robotic Hands 4

Bringes, Christine Incorporating Micromouse Competition into Undergraduate Courses

5

Calderón, Ángel Simulating Robotic Capabilities 6

Clark, Nickalaus Automatic Red Tide Detection using MODIS Satellite Images and Machine Intelligence

7

Mangual Rodríguez, Osvaldo Medical Image Analysis for Microscopy Images

8

Marrón Monteserín, Juan José Design and Development of a Participatory Sensing System Using Location Based Information Systems and Sensor Integration

9

Martínez Ávila, Edwin M. Automatic Trail Mapping without Satellite Technology

10

Matias, Dashawn Programming NXT Robots to Play Soccer 11

Mendoza, Kenneth Programming NXT Robots to Play Soccer 12

Miranda, Schatzi Communications Protocol for Networked Appliances: Enabling Appliances to Schedule Tasks to Induce Peak Shifting

13

Moore, Larry Synergy Networks and Visualization 14

Placeres Rodríguez, Christian E. An Android Application – Bluetooth Sensor Android Integration

15

Richardson, Demetrius Programming NXT Robots to Play Soccer 16

Rodríguez, Emmanuel A Software Package for Automated Logic Reasoning

17

Tosado Jiménez, Hector A. An Android Application – Text‐To‐Speech 18

Tran, Khoa GO‐Sync: A Framework to Synchronize Mapping Contributions from Online Communities and Transit Agency Bus Stop Inventories

19


NSF REU in Sustainable Energy Alternatives and the Advanced Materials

Florida Georgia Louis Stokes Alliance for Minority Participation


Beazley, Christine ‘Doctor Blade’ vs. Electrospray Deposition of Titanium Dioxide Nanoparticles for the Production of Dye Sensitized Solar Cells

21

Browne, Jeremiah Conductive Nanocomposite Polymers for Supercapacitor Application

22

Carter, Justin Cocrystal‐Controlled Synthesis of Imide Molecules for Generation of Metal Organic Materials

23

Colon, Arelys Growth of Silica Nanowires using Pd, Au, and in seed layers for Cancerous Cells Detection for Biological MEMS Sensor Devices

24

Hinson, Justin Ultrasound Diagnostics of Chemical Mechanical Polishing Pads

25

Mobley, Troy An Alternative Small‐Signal Diode Modeling Parameter Extraction Technique

26

Pearcey, Jasmine Developing a Biosensor Utilizing Surface Acoustic Wave Devices

27

Ríos, Ismael Twin Rotor Micro‐Turbine 28

Samuel, Yohannes A Compact Reconfigurable Channel Emulator Chamber for Multipath Frequency Measurements

29

Sánchez, María Structure‐Function Relations of Pd Nanoparticles for Fuel Cell Electrocatalysis

30

Silva, Hayde Variation in Microneedle Geometry to Increase Shear Strength

31

Thompson, Curtis Morphology and Surface Reactivity of Pd Nanoparticles

32

Young, Cherita Analysis of Fischer‐Tropsch liquid fuels through Gas Chromatography

33


NSF REU in Tampa Interdisciplinary Environmental Research


Ackerknecht , Lucas Polybrominated Diphenyl Ethers in Wastewater 35

Araneda, Bárbara Student, Community, and City Working Partnerships for Stormwater Pond Maintenance

36

Cáceres, Hildamarie Anaerobic Biodegradation of Landfill Leachate 37

Costa, Kassandra The Effects of Soil Aging on the Extraction of Pentachlorophenol (PCP) from Contaminated Soil

38

Harrison, TaShae Variability of Soil Organic Matter 39

Henderson, Emily Estimating the Impacts of Nitrogen Oxide from Port Emissions on Air Quality in Hillsborough County, Florida

40

Isaacs ,Wainella Photocatalytic Oxidation of Model Cellular Membranes of E. coli

41

Jewell, Caleb Algae Productivity Rates in Aquaculture and Human Wastewater Using Bench‐scale Photobioreactors

42

Lee, Meg Life Cycle Analysis of Solar Assisted Biomass Gasification

43

Matus, Jillianne The Anthropological and Environmental Significance of Green Space in Rapid Urbanization in the Developing World City of Santa Cruz, Bolivia

44

Nafis, Heidi Ion Exchange Removal of Perchlorate and Nitrate from Groundwater

45


NSF REU in Applied Physics


Bell, Zephra Polypeptide Chirality Influences Multilayer Nanofilm Growth and Structure

47

Chambers, Christopher Developing a Procedure for the Characterization of Mechanical Properties of Collagen Gels

48

Demaske, Brian Development of EAM potentials for molecular dynamics simulations of metals at extreme conditions

49

Duscha, Jacob Growth and characterization of Ba8Ga16Ge30 type I clathrate thin films grown by pulsed laser deposition

50

Easley, Justin Electrochromic Properties of Single‐nanocrystalline Tungsten Oxide

51

Griffin, Jahnieka High yield Bottom‐up Syntheses of Thermoelectric Materials in Nanocrystalline Form

52

Iaizzi, Adam Ab‐initio study of folded armchair grapheme nanoribbons

53

Miller, Travis Growth of Graphene on Metal Substrates 54

Perry, Jennifer Molecular Dynamic Simulation of Oxidative Damage in Cell Membranes

55

Persichilli, Christopher Does Thioflavin‐T detect Critical Intermediates of Amyloid Fibril Formation by Lysozyme?

56

Rao, Advaith Characterizing surface segregation in Fe‐Ni nanoclusters using Monte Carlo simulations

57

Ross, Andrew First‐principles investigation of graphene‐metal interfaces

58

Todaro, Susanna Optical Design of a Robotic TV Camera for Minimally Invasive Abdominal Surgery

59

Trinh, Jennifer Organic Solar Cell Microarrays for Use in MEMS 60

Vande Kolk, Bryant J. Digital Gabor holography using partially spatially coherent light

61

Zaubi, Aaron Excitonic structure and polarization dependence of CdSe and PbSe quantum dots determined by single‐nanostructure laser spectroscopy

62

1

BIO SKETCHS & ABSTRACTS

2

REU in Computer Science and Engineering


3

Victoria Arendt

2. Abstract

Feature Extraction from Pre‐Therapy PET/CT Scans in Patients with Lung

Cancer

V. Arendt1, L. Hall2, D. Goldgof2

1 Duke University

2 Department of Computer Science and Engineering – University of South Florida

[email protected]

Keywords: Biomedical Image Analysis, Image Segmentation, Biomedical Imaging, Positron Emission

Tomography

This poster presents the strategies and algorithms used to segment and extract features from PET

(positron emission tomography) scans of lung cancer patients. It has been suggested that pre‐

therapy data (including quantitative imaging features available through CT and PET scans) of cancer

patients can be used to prospectively match patients to optimal therapeutic strategies. In order to

achieve this aim, we must first retrospectively compare existing imaging features to clinical

outcomes. Although many important features can be extracted from CT (computed tomography)

scans alone, PET scans are necessary to obtain a measure of metabolic activity, Standard Uptake

Value (SUV), which has been shown to correctly assess the efficacy of treatment in various studies.

Using Definiens – Life Sciences software, we wrote an algorithm to segment PET scans and identify

the tumor regions in order to perform feature extraction. This algorithm first segments the image by

combining pixels with similar brightness values and then identifies areas of high metabolic activity by

comparing the brightness of each object to the mean brightness of the entire image. From these

areas, the user can then manually select the tumor region and extract features from this region. This

algorithm allowed us to correctly identify tumor regions in 100% of the PET scans tested (14/14).

Future work includes coding an SUV feature and testing its predictive abilities by cross‐validation.

1. Bio Sketch

1.1 Home Institution: Duke University

1.2 Major: Biology and Computer Science

1.3 Classification: Junior

1.4 USF Advisor/Mentor: Lawrence Hall, Ph.D., Dmitry

Goldgof, Ph.D.

1.5 Professional Goals: PhD in Computational Biology


4

Sergio Andrés Beltrán

2. Abstract

Robotic Hands

Sergio Beltrán1, Yu Sun2

1Universidad Autónoma de Bucaramanga (Colombia)

2Department of Computer Science and Engineering, University of South Florida

[email protected]

Keywords: Robotic Hands, PWM board, Design, Finger.

The Robotic hands are becoming in a interesting field of study because every day there are more

applications and places where we can see it working, due to the forward motion of industry

applications increasingly require more skill and more efficient hands . The proposed method was to

evaluate the design to identify pre‐existing works and how it could get better, some improvements

were evaluated in the design and were simulated in SolidWorks (five fingers) , then based on the

requirements force of 20 N and move the finger at 15 RPM, single finger was decided to model and

do the tests to extrapolate to the others after that a USB PWM board were calculated and selected

to control it with the computer using a serial port, Servomotor was used with the right torque and

speed in each case so sensor to control the position wasn’t needed, the hand actuator is the motor

that moved fushing cable it was changed for Commercial Grade Nylon‐Coated SS Wire Rope 1X7

Strand, .006" ‐ .010" that provided more resistance, and the end the finger is able to grasp a key of

piano keyboard with the correct force and speed.

1. Bio Sketch

1.1 Home Institution: Universidad Autónoma de

Bucaramanga (Colombia)

1.2 Major: Mechatronics Engineering and

Energy Engineering


1.4 USF Advisor/Mentor: Yun Sun, Ph.D.

1.5 Professional Goals: Ms. C., Ph. D, owned a company, politics, teaching.


5

Christine Bringes

2. Abstract

Incorporating Micromouse Competition into Undergraduate Courses

C. Bringes, L. Palmer

Department of Computer Science and Engineering

[email protected]

Keywords: Micromouse competition, mobile robots, undergraduate curriculum

This paper outlines methods used to incorporate the IEEE Micromouse Competition into the

undergraduate curriculum at the University of South Florida as a final project for a course covering

techniques for controlling mobile robots. The Micromouse Competition requires the construction of

an autonomous robot that can first determine the shortest path to the end of a square maze, and

run the course in the shortest possible time. The goal of this project is to provide a hands‐on learning

opportunity that compliments the topics being taught in the course. This includes working with

microprocessors, writing algorithms, using and configuring motors, and interfacing with sensors. The

robot will be built using hardware based on a HC12 microprocessor, stepper motors, and short‐range

IR distance sensors. The software for the robots will be written using the CodeWarrior IDE using the

C programming language. By completing this task as part of the class curriculum, students can

connect the course material to a tangible project and augment the learning experience.

1. Bio Sketch 1.1 Home Institution: University of South Florida

1.2 Major: Computer Engineering

1.3 Classification: Senior

1.4 USF Advisor/Mentor: Luther Palmer, Ph.D.

1.5 Professional Goals: My short term career goal is to get

my Master’s Degree. After that, I

would like to continue pursuing a

career in the field of robotics,

although I am not sure if that will

take place in an industrial or an

academic setting.


6

Angel Calderón

2. Abstract Simulating Robotic Capabilities

A. Calderon, L. Palmer University Of South Florida, Department of Computer Science

[email protected]

Keywords: RobotBuilder, .NET Framework, Operating Systems, Visual Studio

The RobotBuilder software is a versatile program capable of simulating the building, testing and

redesigning of any robotic model without actually having to build it. This saves time and money

during the testing and redesigning phases by not expending resources to construct or reconstruct a

machine, and by simulating a multitude of physical factors and surroundings without creating or

sending the robot to these environments. For example, a device could be tested on the surface of

the moon, near an active volcano, or even in a burning building without the logistical headache!

However, it is not as simple as install, run, and have fun. Before this powerful software can be used

it needs to be properly updated in order to integrate it with whatever operating system the user has.

We used two different computers one with Vista and the other with Windows XP as their operating

systems. These two similar systems use different versions of the .NET Framework and therefore the

data libraries of Visual Studio were different. It took a great deal of work to translate between the

old and new interfaces, which had to be fully functional before use.

The real work began once the job of updating and testing the functionality of the software was

accomplished, and for us that meant taking an existing robot, known as the Micromouse, and

designing a program for it that could allow our mouse to find its way out of any maze. Because we

are trying to improve the capabilities of the robot not its physical design, the difficulties that we had

with this were in creating the algorithm to control its movements and decision‐making. Our ‘smart

mouse’ would need to be able to discern the layout of its environment and remember where it has

been in order to find the quickest way out.

1. Bio Sketch 1.1 Home Institution: University of South Florida 1.2 Major: Computer Science 1.3 Classification: Junior 1.4 USF Advisor/Mentor: Luther Palmer, Ph.D. 1.5 Professional Goals: I intend to apply my joy of programming

into a good career with a productive future. It is my goal to be the first in my family earn my doctorate in this expanding and important field. It is obvious that, in this age of information, computers and technology are benefiting people’s lives and continuing to improve the infrastructure of life, and I hope to one day be one of the people making those improvements.


7

Nickalaus Clark

2. Abstract

Automatic Red Tide Detection using MODIS Satellite Images and Machine

Intelligence

Nickalaus Clark, Lawrence O. Hall University of South Florida

Department of Computer Science

[email protected]

Keywords: Remote sensing, support vector machine

Abstract–Red tide can cause significant environmental and economic damage throughout the coastal

areas of the Gulf of Mexico where it is most prevalent. Rapid and inexpensive detection of red tide is

important to mitigate the threat it poses. In this paper, a support vector machine is trained and

tested based on both human expert evaluation of satellite images and ship‐obtained water samples.

The results from these experiments are analyzed in hopes of finding a statistically significant increase

in accuracy while training the support vector machine using ship data as opposed to human data.

1. Bio Sketch

1.1 Home Institution: University of South Florida

1.2 Major: Computer Science


1.4 USF Advisor/Mentor: Lawrence Hall, Ph.D.

1.5 Professional Goals: I plan to complete my Graduate studies at USF, and move on to develop new strategies in the field of Artificial Intelligence as it applies to the way humans interface with machines.


8

Osvaldo Mangual Rodriguez

2. Abstract

Medical Image Analysis for Microscopy Images

O. Mangual1, D. Goldgof2, L. Hall2

1 Polytechnic University of Puerto Rico

2 University of South Florida

[email protected]

Keywords: HSI Color Space, Stereologer, Stereology

Unbiased stereology is currently the most accurate quantification method for the analysis of

biological structures. Currently, this requires significant manual operation and, hence, has relatively

low throughput. This project consisted of implementing algorithms for image processing and analysis

in C++ to help in the automation of stereological processes. These algorithms will be evaluated and

considered for integration into Stereologer, which is a hardware‐software system for acquiring

images, and obtaining information from biological structures.

The ultimate goal of this project is to implement a set of functions or algorithms to automatically

identify, count, and get information about the cells and other structures in tissue samples on slides.

Color images will be used to better identify the structures. The algorithms are: Thresholding in HSI

Color Space, Fill Hole algorithm, Raster Scanning Algorithm for Connected Region Extraction, and

Color to Grayscale Conversion. Images from rat brains were acquired using Stereologer and

successfully processed and analyzed; initial results show improvement in the overall process. The

resulting images will be fed into a focusing detection algorithm.

1. Bio Sketch

1.1 Home Institution: Polytechnic University of Puerto

Rico



1.4 USF Advisor/Mentor: Dmitry Goldgof, Ph.D., Lawrence

Hall, Ph.D.

1.5 Professional Goals: I want to go to graduate school

and get my master’s degree and

my PhD. Then I want to work in

the industry and start my own

business. At some point I would

like to go to the Academia and be

a professor.


9

Juan José Marrón Monteserín

2. Abstract

Design and development of a participatory sensing system using

location based information systems and sensor integration

Juan José Marrón1, Miguel A. Labrador2, Alfredo Perez2

1 Universidad de Oviedo, Oviedo, Asturias, Spain

2 Department of Computer Science and Engineering, University of South Florida

[email protected]

Keywords: Location‐based information system, GPS, visualization.

The number of cellular phones has increased in the past 15 years reaching five billion devices during

the current year 2010. Each day, these devices are more and more capable of collecting, classifying,

and transmitting information obtained by multiple sensors such as Global Positioning System (GPS)

receivers, accelerometers, and some others that can be attached to them via common

communication interfaces. Thanks to these new features, mobile phones can be considered mobile

sensing devices with the potential to provide information like never before to address large‐scale

societal problems. This project builds and demonstrates a general mobile information sensing system

that measures temperature, humidity, air quality, and other important variables, and shows the

readings as overlays in a Google map. With the collaboration or participation of all cellular phone

users, these variables can be measured and monitored in real‐time for global warming control and

pollution monitoring and control, as well as many other health‐related and location‐based

applications.

1. Bio Sketch

1.1 Home Institution: Universidad de Oviedo (Spain)

1.2 Major: Telecommunication Engineering


1.4 USF Advisor/Mentor: Miguel A. Labrador , Ph.D.

1.5 Professional Goals: To work in a mobile phone

network operator or in a mobile

phone e manufacturer company


10

Edwin M. Martínez Ávila

2. Abstract

Automatic Trail Mapping without Satellite Technology

E. Martinez1, L. Hall2, J. Ligatti2

1 University of Puerto Rico in Arecibo

2Department of Computer and Engineering, University of South Florida

[email protected]

Keywords: Trail Mapping, Mobile Phones, and Mobile Applications

Creating a map or determining a location without GPS can be a breakthrough in navigation

technology. The aim of this research is to make an application that can create an automatic trail

mapping without satellite technology. To develop this program we used a device that can determine

three kinds of data (direction, inclination, and distance) of a bicycle. This device has a compass to

determinate direction, an accelerometer, which is used for determining inclination, and a sensor

input to determinate distance/ speed. As a result of this research, we implemented the necessary

methods for the accelerometer, compass, saving the data in a file, and illustrating it in an interface.

1. Bio Sketch

1.1 Home Institution: University of Puerto Rico, Arecibo 1.2 Major: Computer Science 1.3 Classification: Senior1.4 USF Advisor/Mentor: Lawrence Hall, Ph.D., Jay Ligatti,

Ph.D. 1.5 Professional Goals: As professional goals, I would like to

do my PHD in one of different University in the USA, which is specializing in Engineering, Science and Mathematics. I would also continue doing research in the area of locations Base or networking. After graduating of my PHD I want to work in the industry.


11

DaShawn Matias

2. Abstract

Programming NXT Robots to Play Soccer

D. Matias1,3, D. Richardson1,3, K. Mendoza1,3, A. Weitzenfield3,4 1Tallahassee Community College

2Hillsborough Community College


4Autonomous Institute of Technology (ITAM), Mexico

[email protected]

Keywords: Artificial Intelligence, Robotics, NXT‐Robots

Asimo, BIG DOG, and Mr. Incredible are just a few of the names of the latest robots that are getting the spotlight in the technology world today. The question is what will these robots do for us and, is the money that is funded towards Robotics and Artificial Intelligence research being wasted? The answer to that question is no they are not a waste of money and robots do benefit human beings in a variety of ways. For instance, there are robots that assist doctors with certain types of surgery’s and operations (Da Vinci Robot).

The hardest task and our main goal in robotics are to program these machines to make decisions on their own like we as humans do. Our research objective using NXT‐Robots is to program these robots to play soccer, communicate with each other using Bluetooth, and then ultimately control all robots on the field using one main camera overlooking the soccer field. Using the RobotC software program, we can write commands that we want the robot to perform and download our file into the NXT‐Brick of the robot. Utilizing a simple step by step approach, our focus was to have the robot perform one task at a time and based on the situation, the robot will initiate another action or command after the task is completed.

1. Bio Sketch

1.1 Home Institution: Tallahassee Community College



1.4 USF Advisor/Mentor: Alfredo Weitzenfeld, Ph.D.

1.5 Professional Goals: Software Engineering


12

Kenneth Mendoza

2. Abstract


K. Mendoza1,3, D. Matias2,3, D. Richardson2,3, A. Weitzenfield3,4


2Tallahassee Community College



[email protected]




1. Bio Sketch

1.1 Home Institution: Hillsborough Community College

1.2 Major: Computer Science & Engineering

1.3 Classification: Freshman

1.4 USF Advisor/Mentor: Alfredo Weitzenfeld, Ph.D.

1.5 Professional Goals: To be a space cowboy.


13

Schatzi Miranda

2. Abstract

Communications Protocol for Networked Appliances: Enabling Appliances to Schedule Tasks to Induce Peak Shifting S. Miranda1, K. Christensen2, A. Parisi2

1 University of Turabo

2University of South Florida

[email protected]

Keywords: Peak Shifting, Scheduling Appliances, Building Networks

Peak shifting is the re‐scheduling of tasks to a time when the electric demand is less and power is at

a lower cost, as incentivized by dynamic pricing established by the power company. The term task

relates to a power‐consuming job to be performed by an appliance. In order to achieve peak shifting,

we created a communications protocol that will keep all networked appliances informed of all events

that take place on a building’s local network. The protocol also communicates the power and energy

usage peak limitations provided by the power company. The communications protocol works by

sending a series of messages across the network. Each message carries key information used to

update energy usage and scheduled task information. These messages get sent across the network

to any appliance that requests them. The appliance can then process these messages and schedule a

task in a time that conforms to the energy and power peak limitations set by the power company

while at the same time aiming to reduce costs for the user. We will emulate our implementation in a

multiple computer system that will communicate using a common port and implement the protocol

through Windows Sockets using User Datagram Protocol. We will demonstrate information

exchange, storing, processing and the scheduling of tasks. Our system of communications coupled

with distributed scheduling allows for more control over a building’s power usage which will lead to

a reduction in peak demand and to lower electricity costs for the user.

1. Bio Sketch

1.1 Home Institution: Universidad del Turabo, Gurabo

P.R.

1.2 Major: Electrical Engineering


1.4 USF Advisor/Mentor: Ken Christensen, Ph.D.

1.5 Professional Goals: Complete a PHD in Electrical

Engineering with focus on

Communication Systems.


14

Larry Moore

2. Abstract

Synergy Networks and Visualization

Larry Moore, Xiaoning Qian


[email protected]

Keywords: Bioinformatics, Genes, Synergy, Entropy, Microarray, SNP, Cancer, Disease

Through the analysis of microarray data, we determine the epistatic effects of SNPs on the disease

development, specifically, we are using an ovarian cancer study from the Moffitt Cancer Center. We

compute the synergy between pairs of SNPs and create a synergy network. In this project, the

synergy network in the form of a graph can be used by researchers to discover the necessary

criterion for diagnosing a particular disease. We discuss our approach to developing this tool and

features, such as color mapping to aid visualization. Finally, we discuss the results that have been

confirmed by the Moffitt Cancer Center.

1. Bio Sketch




1.4 USF Advisor/Mentor: Xiaoning Qian, Ph.D.

1.5 Professional Goals: Graduate school


15

Christian E. Placeres Rodríguez

2. Abstract

An Android Application – Bluetooth Sensor Android Integration

C. Placeres1, M. Labrador2, S. Barbeau3

1 University of Turabo – Computer Engineering

2Engineering Department at the University of South Florida

3 The Center for Urban Transportation Research at the University of South Florida

[email protected]

Keywords: Android, Bluetooth, Sensor

As technology moves on and new things are developed, the ways of obtaining data of our daily

surroundings is often made easier. With just one click on your mouse or on your mobile phone

nowadays you can obtain the newspaper, weather information, or pretty much anything you might

want to browse on the web. What would you think if you could know how the area around you is

doing in terms of temperature, humidity, carbon dioxide, and so on, directly from a click on your

phone? With just one simple thing as opening the application you get the most recent data on a map

surrounding your area, wouldn’t you like this?

This project focuses on obtaining sensor data to an Android OS phone through Bluetooth connection

in which it receives all the data obtained from the surroundings and will then map an overlay of the

different readings as well as displaying the data obtained. This would mean that you would be able

to open the application and see the data analyzed and mapped for you to see it on the most up to

date map as well as being able to see how the data is represented by location.

1. Bio Sketch 1.1 Home Institution: Universidad del Turabo 1.2 Major: Computer Engineering 1.3 Classification: Junior 1.4 USF Advisor/Mentor: Miguel Labrador, Ph.D. 1.5 Professional Goals: Completing a bachelors and masters

in computer engineering, developing software for an easier understanding while aiding people with each step towards an efficient mobile software future. Also I look forward to learning more as I go and understanding more and more what every language in programming has to offer as well as working in a company or organization that will help me reach my goals and will allow me to learn from the world as I travel.


16

Demetrius Richardson

2. Abstact


D. Richardson1,3, D. Matias1,3, K. Mendoza2,3, A. Weitzenfield3,4

1Tallahassee Community College




[email protected]




1. Bio Sketch 1.1 Home Institution: Tallahassee Community College 1.2 Major: Computer Engineering 1.3 Classification: Sophomore 1.4 USF Advisor/Mentor: Alfredo Weitzenfeld, Ph.D. 1.5 Professional Goals: I want to do research with

microchips, I want to make microchips more efficient, and if possible make the processing faster with better analysis and better solutions to the user’s problems. To accomplish my goals I will obtain my PhD in Computer Hardware Engineering and Masters Degree in Electrical Engineering.


17

Emmanuel Rodríguez

2. Abstract

A Software Package for Automated Logic Reasoning

E. Rodriguez, H. Zheng

1University of South Florida


[email protected]

Keywords: And Inverter Graph, Automated Logic Reasoning, Digital Circuit, Hardware Verification,

Software

In order to thoroughly test a digital circuit design, every possible input combination must be checked

on the design against its specifications. However, for sequential circuits with a large of number of

inputs this method requires a significant amount of time. The development of a software package for

automated logic reasoning is our approach to reduce the amount of time required to verify a design.

Using our software package, a digital circuit design may be automatically tested against its

specifications. Rather than manipulating individual input vectors, the software package manipulates

sets of input vectors and design states, which are characterized by the Boolean functions. We chose

to use an And Inverter Graph (AIG) data structure to represent the Boolean functions, and have

implemented efficient algorithms for common Boolean logic operations based on this data structure.

For large designs the AIG may require a large amount of space because of redundancies. Therefore,

we must also reduce the data structure by minimizing and removing the redundant logic. Our goal is

to improve upon existing methods and create better algorithms in order to reduce the space and

time required for logic verification of digital designs.

1. Bio Sketch




1.4 USF Advisor/Mentor: Hao Zheng, Ph.D.

1.5 Professional Goals: Continue research on automated

logic reasoning in graduate school

and have the opportunity to apply

my experience in the real world.


18

Héctor A. Tosado Jiménez

2. Abstract

An Android Application – Text‐To‐Speech

H. Tosado1, S. Barbeau2

1 University of Puerto Rico – Department of Computer Engineering

2The Center for Urban Transportation Research at the University of South Florida

[email protected]

Keywords: Android, Text‐To‐Speech

Recently, the dangers of texting while driving has gained much attention, with recent studies stating

that the risk of someone who texts while driving being in a crash is 8 to 23 times greater than the

crash risk of someone who does not text while driving. In some states, including Florida, services

exist that will keep travelers informed of any traffic delays or accidents that may affect your travel.

However these services require a driver to open and read a text message which contributes to the

distracted driving problem. This action can be dangerous and goes against the No‐Texting‐While‐

Driving rule in many states.

This project focused on implementing intelligent software for cell phones that allows an application

to “speak” a message to an individual. These messages are only delivered to the user when they are

moving under a safe speed or when they are completely stopped. This reduces the amount of risk in

said service and at the same time allows the driver to receive the information without having to

interact with the mobile phone. An Android mobile phone application was implemented that

receives a UDP packet from the TRAC‐IT system, calculates the driver’s actual speed, and speaks the

message to the driver if they are traveling at a safe speed. This Android application also logs into the

TRAC‐IT server and records the travel path of the phone.

1. Bio Sketch

1.1 Home Institution: University of Puerto Rico



1.4 USF Advisor/Mentor: Sean Barbeau, B.S.

1.5 Professional Goals: Achieve my Bachelors and Masters in Computer Engineering and then travel the world with different companies and be a tourist with a job. As to what that job can be; I’m up for trying anything a first time.


19

Khoa Tran

2. Abstract

GO‐Sync: A Framework to Synchronize Mapping Contributions from Online

Communities and Transit Agency Bus Stop Inventories

Khoa Tran1, Sean Barbeau2, Edward Hillsman2 1Department of Computer Science and Engineering

2The Center for Urban Transportation Research at the University of South Florida

[email protected]

Keywords: General Transit Feed Specification, OpenStreetMap, Location‐based services, bus stop,

transit, travel agency

Most geographic data (e.g. map data) is currently either locked into proprietary formats and systems

or under licensing restrictions. These limitations prevent people from sharing, viewing, updating this

data without permission from the owner or vendor, and also limit innovations in areas such as

location‐based services. Therefore, we need an open‐source and open‐data solution. General Transit

Feed Specification (GTFS) is a common format for public transportation agencies’ schedules and their

geographic information for bus stops. However, transit agencies struggle to maintain and update

these very large official datasets. Meanwhile, OpenStreetMap, an online free‐content repository of

geographic data driven by contributions from an online community, currently has little information

about public transportation schedules, especially in the United States, but it has a large number of

users willing to freely contribute their efforts to record and improve geographic data for their

communities. In this project, we create a tool for synchronizing transit data between the public

transportation agency’s official GTFS dataset and OpenStreetMap. The application therefore enables

public transportation agencies to upload data into OpenStreetMap, where the online community can

edit and correct the bus stop locations and amenities for their community. The application also

enables transit agencies to retrieve this updated data so they can improve their own datasets.

Successfully translating GTFS data into the OpenStreetMap format will facilitate over 110 transit

agencies across the U.S. to share their public‐domain data with each other, the community, as well

as software developers.

1. Bio Sketch




1.4 USF Advisor/Mentor: Sean Barbeau, B.S.

1.5 Professional Goals: Integrate information systems into daily

life, especially Location Based Services

20

REU in Sustainable Energy Alternatives and the Advanced Materials

REU Florida Georgia Louis Stokes Alliance for Minority Participation (FGLSAMP)


21

Christine Beazley

2. Abstract

‘Doctor Blade’ vs. Electrospray Deposition of Titanium Dioxide Nanoparticles for the Production of Dye Sensitized Solar Cells

C. Beazley1, E. Tridas2, R. Schlaf3 1 Georgia Institute of Technology Department of Civil Engineering

2 University of South Florida Department of Mechanical Engineering 3 University of South Florida Department of Electrical Engineering

[email protected]

Keywords: electrospray, doctor blade, titanium dioxide, dye sensitized, solar cell

Dye sensitized solar cells (max efficiency: ~11%) are cheap alternatives to silicon due to their

extremely low production costs, and are commonly deposited with TiO2 films via ‘doctor blade’

method. However, this research aims to prove that electrospray can be a competitive alternative to

‘doctor blade’ deposition. By establishing consistent 5‐10% efficiencies for the ‘doctor blade’

devices, the structures of the electrosprayed and ‘doctor blade’ devices may be compared, and

adjustments to the electrospray technique may follow. This will help develop optimal electrospray

deposition of 3D heterostructures for application in solar cell devices. To work towards this, films

were deposited by ‘doctor blade’ using 50μm thick tape applied in 1 to 3 layers and Ti‐Nanoxide HT‐L

paste applied in 25μL, 50μL, or 75μL quantities. Samples were sintered at 500°C for 1 hour. Films

using 1 layer of tape and 25μL or 50μL of paste remained laminated to the substrate, while most

others were uneven and cracked. These laminated films displayed efficiencies of 0.27% and 0.56%,

respectively. Samples with 1 layer of tape and 25μL of paste were sintered at lower temperatures

(120°C, 215°C, 310°C, 405°C) for 1 hour. These efficiencies were (0.03%, 0.03%, 0.16%, 0.14%),

respectively. The optimal sintering temperature (≥500°C) can be applied to electrospray deposition

sintering. Next, progress towards higher ‘doctor blade’ efficiencies will occur, along with movement

towards an entirely electrosprayed solar cell. The optimal characteristics of ‘doctor blade’

deposition structures will then be used to adjust electrospray techniques in order to improve

electrospray deposition efficiencies.

1. Bio Sketch 1.1 Home Institution: Georgia Institute of Technology 1.2 Major: Civil Engineering 1.3 Classification: Senior 1.4 USF Advisor/Mentor: Rudy Schlaf, Ph.D.1.5 Professional Goals: I am considering the Master’s

International Program with the Peace Corps, and am currently looking into other graduate school opportunities. I hope to work in water systems, sanitation, or sustainable energy following graduate school, and I would love the opportunity to travel or live abroad at some point during or following graduate school.


22

Jeremiah Browne

2. Abstract

Conductive Nanocomposite Polymers for Supercapacitor Application

J. Browne1, H. Gomez2, M. K. Ram2, A. Kumar2

1 Mechanical Engineering, University of Florida (Gainesville) 2Nanotechnology Research and Education Center, University of South Florida (Tampa)

[email protected]

Keywords: Battery, Capacitor, Polymer, Energy

Industry as well as research centers around the globe are coping to address the world‐wide energy

demand, and competing with all available alternate technologies. In fact, the growing demand of

portable systems and hybrid electric vehicles, memory protection in CMOS, logic circuit, VCRs, CD

players, PCs, UPS in security alarm systems, remote sensing, smoke detectors, etc. require high

power in short‐term pulses. So, this research looks into high reversible capacity storage systems to

meet that demand. Organic polymers have been shown to have a large capacity for allowing

electrochemical reactions due to the wide range in which such reactions can occur. Due to the

versatility of such polymers we are able to research their uses in capacitor and rechargeable battery

applications. The novel synthesized organic nanocomposite polymers such as graphene‐poly(ortho‐

anisidine) (G‐POAS) and graphene‐polyaniline (G‐PANI) offer a solution to problem for the fabrication

of supercapacitors. The G‐PANI and G‐POAS nanocomposite materials were synthesized using the

chemical oxidative precipitation technique. The nanocomposite polymers were characterized using

Raman, x‐ray, SEM, TEM and cyclic voltammetric techniques. The supercapacitors were fabricated

using G‐PANI in N‐methyl pyrrolidinone and G‐PANI‐nafion, G‐POAS‐Nmethyl 2 pyrolodinone on

graphite electrodes. A specific capacitance of 300 to 500 F/g at a current density of 0.1A/g was

observed over G‐PANI nanocomposite material. We have aimed at tailoring properties optimization

of the proposed capacitors through optimization of their components and packaging towards

qualification for supercapacitor applications.

1. Bio Sketch

1.1 Home Institution: University of Florida

1.2 Major: Mechanical Engineering


1.4 USF Advisor/Mentor: Ashok Kumar, Ph.D.

1.5 Professional Goals: Develop advanced materials and

methods through research; build

affordable high quality

sustainable structures for people

to inhabit.


23

Justin Carter

2. Abstract

Cocrystal‐Controlled Synthesis of Imide Molecules for Generation of Metal Organic Materials

Justin Carter, Michael J. Zaworotko, Jason Perman

Department of Chemistry, University of South Florida

[email protected]

Keywords: Metal‐Organic Materials (MOMs), X‐ray diffraction, Hydrogen storage

Cocrystal‐controlled solid‐state synthesis of imides occurs after heating a new phase formed from an

anhydride and amine to the condensation product. Two anhydrides, 3,3’,4,4’ biphenyltetra‐

carboxylic dianhydride (BPPDA) and 3,3’,4,4’ benzophenonetetracarboxylic dianhydride (BPTCDA),

were combined with various amines. The amines included are 3‐aminobenzoic acid (3ABA), 4‐

aminobenzoic acid (4ABA), 5‐aminoisophthalic acid (5ABDC), and 5‐amino‐2,4,6,triiodoisophthalic

acid (TIABDC). Grinding is an eco‐friendly procedure compared to refluxing in organic solvents. After

the dry grind is complete the product was heated at an experimentally determined temperature that

was found using differential scanning calorimetry (DSC) and thermal gravimetric analysis (TGA). The

imides are then reacted with different transition metals using various synthetic conditions.

Conditions included a molar ratio of metal to imide of 2:1 where 0.01 mmol of M(NO3)2•XH2O (M =

Cu, Zn, Co, Ni, X=2‐6) was reacted with 0.005 mmol of the imide. Pyridine, 2‐6 Lutidine, and 3‐5

Lutidine were the bases used to help deprotonate the carboxylic acid and were in quantities of 0.02

mmol for each corresponding reactions, including 500 µL of guest solvents. The samples were then

heated at 85C, 105C, and 115C for 24 hours. At each temperature the samples were examined for

single crystal formation. The main purpose of this research was to develop crystals in hope for the

generation of Metal‐Organic Materials (MOMs). Crystals are then characterized by single crystal X‐

ray and powder X‐ray diffractions techniques. Surface area and hydrogen sorption were then

evaluated. Future research will seek to develop MOMs that have large hydrogen storage capacity.

1. Bio Sketch

1.1 Home Institution: University of Arkansas



1.4 USF Advisor/Mentor: Michael Zaworotko, Ph.D.

1.5 Professional Goals: To become a certified

professional engineer and

business owner.


24

Arelys Colon

2. Abstract

Growth of Silica Nanowires using Pd, Au, and in seed layers for Cancerous

Cells Detection for Biological MEMS Sensor Devices

Arelys Colon1, Al‐Aakhir A . Rogers2, Shekhar Bhansali2

1University of Puerto Rico‐Mayagüez

2 Bio‐MEMS and Microsystems Research Laboratory, Department of Electrical Engineering, University

of South Florida

[email protected]

Keywords: Nanowires Growth, Cancerous Cells Detection

The use of nanowires for the electrochemical sensor increases the surface area, in which

ultrasensitive detection and accurate measurement of biologically relevant molecules are able to be

detected. Our novel approach towards manufacturing nanowires in site specific locations is the

focus of this research.

The growth of silica nanowires enhances the signal capture for determining and differentiating

between cancerous and non‐cancerous cells. If we add Nanowires, increases the surface area and

more cells can be placed on the sample. If we have more cells on a sample, improve the signal for

determining between cancerous and non‐cancerous cells.

1. Bio Sketch 1.1 Home Institution: University of Puerto Rico, Mayagüez

Campus 1.2 Major: Electrical Engineering 1.3 Classification: Junior1.4 USF Advisor/Mentor: Shekhar Bhansali, Ph. D. 1.5 Professional Goals: When I finish my Bachelor’s Degree, I

would like to obtain my Master’s

Degree. If not, I hope that I will find a

good job in a place where I can

develop and implement my skills and

abilities in my profession.

REU Florida Georgia Louis Stokes Alliance for Minority Participation

25

Justin Hinson

2. Abstract

Ultrasound Diagnostics of Chemical Mechanical Polishing Pads

Justin Hinson, Joe Bonivel, Ashok Kumar

University of South Florida

Department of Mechanical Engineering

[email protected]

Keywords: Ultrasoundic transmission, CMP (Chemical Mechanical Planarization), Polyurethane pads,

Material removal rate, Surface roughness

The need for a nondestructive characterization of chemical mechanical planarization has become

apparent in recent years. Uncontrollable variations in removal rate and planarization results from

pad to pad are creating difficulties in optimizing procedures. Ultrasonic transmissions tests were

done to give an accurate model of the industrial chemical mechanical polishing (CMP) pads and to

optimize the removal rate during polishing and the life expectancy of the pad. This process is used

only used because it is a nondestructive way of characterizing the CMP pads but also to give a true

reading of the density of the pads. Modeling of the pads has been done by examining three different

types of six inch pads, (IC1000, IC1400 and RD2003), each of which has different mechanical

properties that yield various removal rates and life expectancies. The UST tests were run as received,

post conditioning, and post polishing to determine the aforementioned effects on the removal rate

and life expectancy. Result indicate that the density and surface roughness are increased after

conditioning and are sustained during polishing experiments until on average 25 polishes at which

time the pads must be replaced. This data helps to indicate to the deterioration of the pad and

variations in planarization results. Further analysis indicates that polishing within the sustainable

period optimizes the removal rate and sample surface planarity.

1. Bio Sketch




1.4 USF Advisor/Mentor: Ashok Kumar, Ph.D.

1.5 Professional Goals: My goal is to graduate with

my mechanical engineering

degree and join a company

like Boeing to work with

aircrafts.


26

Troy Mobley

2. Abstract

An Alternative Small‐Signal Diode Modeling Parameter Extraction Technique

Troy Mobley II, Olawale Adebimpe Ajayi, Jing Wang, Gokhan Mumcu


The Center for Wireless and Microwave Information Systems, Department of Electrical Engineering

[email protected]

Keywords: Extracting Parameter, Impedance, Rectenna, Diode Modeling

A new method is presented that allows the extraction of diode intrinsic model parameter from the

measurement of extrinsic forward, backward I‐V and scattering parameter characteristics. This is

done independently of the parasitic parameters that might be present either in series or parallel with

the device. The extraction is performed from the optimization of the diode data measured. From the

measured I‐V curve, small signal was derived; this aided the derivation of the approximate value of

the diode junction series resistance. With the diode measured scattering data loaded to optimization

function of ADS, the match of the curve produce the parameter of the junction as well as

independent parasitic. This process is repeated for more than one bias diode to ascertain the

findings.

1. Bio Sketch




1.4 USF Advisor/Mentor: Jing Wang, Ph.D. Gokhan

Mumcu , Ph.D.

1.5 Professional Goals: To serve in the United States Air Force, obtain my M.S. in Electrical Engineering, and then own a small company in RF/wireless/microwave systems.


27

Jasmine Pearcey

2. Abstract

Developing a Biosensor Utilizing Surface Acoustic Wave Devices

Jasmine Pearcey, Mandek Richardson, Venkat Bhethanabotla


Department of Chemical and Biomedical Engineering

[email protected]

Keywords: Surface Acoustic Wave (SAW), shear horizontal, lithography

The focus of this research is to create a Shear Horizontal ‐Surface Acoustic Wave device with a sensor

that can detect certain biomarkers in a given substance like blood or urine. In order to successfully

test biomolecules with a surface acoustic wave device an appropriate package needed to be

designed that would interface the sensor with outside electronics and incorporate microfluidics to

deliver fluid samples to the sensing surface. In order to create the package experience with AutoCAD

and SolidWorks was utilized to help make the design layouts that would be implemented in package

fabrication. As the work progressed several design iterations were performed until a final design

was implemented. In addition, much training at the Nanomaterials Nanomanufacturing Research

Lab was required to learn lithographic techniques used to make SAW devices.

1. Bio Sketch 1.1 Home Institution: University of South Florida1.2 Major: Chemical Engineering 1.3 Classification: Senior 1.4 USF Advisor/Mentor: Venkat Bhethanabotla, Ph.D. 1.5 Professional Goals: I want to enroll in graduate school

to obtain a Master’s in Biomedical Engineering with a concentration in Tissue/Genetic Engineering. I would like to work for Johnson & Johnson, Proctor & Gamble, or a similar company as a researcher and developer in consumer products. I am also interested in working with companies that engage in stem cell research such as Geron, Gelera, and BioTransplant.


28

Ismael Rios

2. Abstract

Twin Rotor Micro‐Turbine

Ismael Rios1, Henry Cabra2, Sylvia W. Thomas2

1 Autonoma de Occidente University, Department of Mechatronic Engineering, Advance Materials for

Micro and Nanotechnology Research Group (Colombia)

2Department of Electrical Engineering, University of South Florida

[email protected]

Keywords: Micro turbine, Micro generators, Venturi, Computer fluid Dynamics (CFD) analysis, Bio‐

Power

A novel design of micro turbine is presented in this document together with a CFD simulation and

fast 3D prototyping model. A twin rotor micro turbine is presented in this document to validate its

applicability in different fields such as Biomedical, military equipment. The advantages of the

proposed model are decreased Rotor‐Holder rotary friction and low pressure drop. The drop of

pressure is the hardest and more important variable to handle due to the heart’s pumping

conditions. The reduced friction between Rotor and Holder allowed taking advantage of the low

head pressure flows. Simulations are based in 15 and 30 dual rotors blade models enclosed in a

Venturi type Holder.

The first sizing approach allowed us to prototyped it using Benchman’s MX CNC Machining Center

and the Dimension SST 768 3D Printer from Industrial and Management VirtualMDLab USF which

allowed us to compare theoretical calculations with practical results for future redesigns. This project

is part of the research of Advance Material Bio & Interface Research AMBIR USF group and the

objective of this document is to present the turbine’s CAD design, first approach simulation analysis

and a rapid prototyping.

1. Bio Sketch

1.1 Home Institution: Autonoma de Occidente University

(Colombia)

1.2 Major: Mechatronic Engineering


1.4 USF Advisor/Mentor: Sylvia Thomas, Ph.D.

1.5 Professional Goals: I would like to continue my studies in

MEMS applying for an MSc, or PhD. In

any field of Nanotechnology.


29

Yohannes Samuel

2. Abstract

A Compact Reconfigurable Channel Emulator Chamber for Multipath Frequency Measurements

Yohannes Samuel, James Cooper, Thomas Weller University of South Florida

The Center for Wireless and Microwave Information Systems, Department of Electrical Engineering

[email protected]

Keywords: CRCEC, Antenna, Wireless systems

The Compact Reconfigurable Channel Emulator Chamber (CRCEC) is a 3’ x 3’ x 2’ table top

instrument. This tool provides a condensed environment to test and observe an electronic signal

during severe multi‐path channeling. There are several ways this chamber creates its multitude of

various channels, beginning with the highly reflective (aluminum) walls. Another highlight to this

reverberation chamber is a “stirrer blade”, which can configure over 400 positions. This blade greatly

increases the variation of paths the signal can travel. This chamber has a component augmented that

allows a portion of the transmitted signal to be introduced to time delay that causes further

interference. The delay can range from 0‐75 nanoseconds. There are eight electronically‐controlled

interference antennas transmitting signals and one receiving antenna. The chamber allows the ability

to observe wireless systems under multi channel situations in a compact atmosphere and produces

swift responses. The CRCEC saves an immense amount of time and money by giving the researcher

the ability to test a range of systems. The dynamic range of this chamber can test a given schematic

in extreme scenarios, and thus circumventing the need to create costly individual configurations to

test desired systems.

1. Bio Sketch 1.1 Home Institution: University of South Florida 1.2 Major: Electrical Engineering 1.3 Classification: Senior 1.4 USF Advisor/Mentor: Thomas Weller, Ph.D. 1.5 Professional Goals: I am currently a senior in Electrical

Engineering. My goals are not only to keep up with current technology but to help pioneer more advanced and efficient forms of communication. In conjunction with my studies, I am working with the Center for Wireless and Microwave Information Systems (WAMI) and wish to continue into my graduate work. I believe this is an era shifting towards wireless communications and many other forms of wireless applications, and I aspire to help spearhead this movement thru my new service to country.


30

Maria Sanchez

2. Abstract

Structure‐Function Relations of Pd Nanoparticles for Fuel Cell Electrocatalysis María Sanchez, Selasi Blavo, John N. Kuhn

University of South Florida, Department of Chemical and Biomedical Engineering

[email protected]

Keywords: Palladium, Nanoparticles, Electrocatalysts, Proton Exchange Membrane Fuel Cell, Electrochemical System

This work provides a study of palladium‐based electrocatalysts for proton exchange membrane fuel

cells (PEMFCs). This study addresses the limitations (efficiency and cost) of Pt as a catalyst in

PEMFCs. Increasing the electrocatalytic oxygen reduction activity while decreasing the Pt loading

would greatly enhance the development of PEMFCs. The periodic proximity of Pd and Pt suggests a

similar trend in catalytic properties. At a fraction of the cost of Pt, Pd provides a potentially viable

electrocatalytic alternative for PEMFC applications and this provides the impetus for our work. The

systematic examination of structure‐electrocatalytic properties in monodispersed Pd nanoparticles

will involve synthesis, characterization and electrochemistry testing. Morphologically controlled Pd

nanopartticles, of different varieties, were synthesized and studied electro catalytically for oxygen

reduction. Morphology is controlled through a sequential addition technique of three different

reagents. The reagents include K2PdCl4 (precursor), cetyltrimethylammonium bromide (surfactant),

and ascorbic acid (reducing agent). By changing the injection sequence of reductant and surfactant;

Cubic, multi‐armed, and dentritic Pd nanoparticles are selectivity obtained. Characterization of the

nanoparticles was carried out using techniques; including Transmission Electron Microscopy (TEM),

and X‐Ray Diffraction (XRD). Oxygen reduction reaction, ORR, experiments were implemented using

a three‐electrode electrochemical cell set‐up. The electrodes consist of a reference electrode

(saturated calomel electrode), a counter electrode (Pt wire), and a working electrode (ring disk

electrode). Through the current that was generated, cyclic voltametry data is collected through a

software interface, where the electrocatalytic properties of the material can be evaluated and

further studies performed.

1. Bio Sketch 1.1 Home Institution: University of South Florida 1.2 Major: Chemical Engineering 1.3 Classification: Senior 1.4 USF Advisor/Mentor: John N. Kuhn, Ph.D. 1.5 Professional Goals: My current goal is to complete my B.S.

degree. After that, I plan to complement my academics with exposure in nanomaterials & nanotechnology research. By transitioning to graduate school and completing my Biomedical M.S. degree, I can specialize in the field of nanomedicine. I am interested in making contributions towards the improvement of cancer research and novel therapies.


31

Hayde Silva

2. Abstract

Variation in Microneedle Geometry to Increase Shear Strength

Hayde Silva, Puneet Khanna, Shekhar Bhansali

Bio‐MEMS and Microsystems Research Laboratory, Department of Electrical Engineering

[email protected]

Keywords: Microneedles; DRIE; Microfluidics; Lab‐on‐a‐Chip; Bio‐MEMS

This research aims to validate the effect of geometrical variations on the fracture strength of hollow

silicon microneedles. Needle failure due to axial and shear loads may be due to heterogeneous peak

stresses within the bulk material. Analytical determination of physical usage limits of microneedles

can be misleading, as beam fracture models do not translate well to the micro‐scale. Needle failure

due to breakage can generally attributed to shear forces. In the study, 35 and 36 gauge hollow

microneedles with a conventional circular lumen and those with enhanced ‘letter I’ shaped lumen

geometry were fabricated. Due to their geometry, the ‘I’ shaped needles have a higher second

moment of inertia, which leads to higher strength. The fracture limits of these needles due to shear

forces were quantified. Average shear fracture limits of 36 gauge needles was 36.51 gf for circular

geometry, while for the ‘I’ shaped needles it was 96.64 gf along the lateral direction. For 35 gauge

needles the average fracture limits were 79.9 gf for circular needles, and 148.65 gf along the lateral

direction for the enhanced geometry needles. Along the weaker axis, the enhanced geometry

resulted in marginally lower strength than the circular counterparts for the 35 gauge needles, while

it appreciably increased for the 36 gauge needles. The effect of geometry on shear strength was

significantly higher for smaller microneedles.

1. Bio Sketch




1.4 USF Advisor/Mentor: Shekhar Bhansali, Ph.D.

1.5 Professional Goals: My short term professional goal is to complete my bachelor’s and master’s degree in Electrical Engineering. Once I graduate, I will like to pursue a career in the MEMS field. And use my skills to build more efficient medical devices at a nanoscale level.


32

Curtis Thompson

2. Abstract

Morphology and Surface Reactivity of Pd Nanoparticles

Curtis Thompson, Selma Hokenek, John Kuhn


Department of Chemical and Biomedical Engineering

[email protected]

Keywords: Nickel, Palladium, Nanoparticles, Reforming, Morphology, Catalyst, Catalysis, Surface

Sites.

The increasing need for renewable energy sources has lead to the development of nanoscale

catalysts, composed of a wide variety of different metals and oxides. In our study we investigate the

fabrication of size and shape‐controlled palladium (Pd) nanocrystals for use in methane reforming.

The size of Pd nanocrystals can be controlled by the ratio of Pd precursors used in polyol synthesis

because Pd2+ precursor, which nucleates faster, yields smaller particles than Pd4+ precursor. The

shapes of the nanoparticles are controlled using bromide ions in solution. X‐ray diffraction (XRD) and

transmission electron microscopy (TEM) were used to characterize the particles made. Future work

will include the use of gas chromatography (GC) and mass spectrometry (MS) to characterize the

activity and selectivity of the fabricated Pd nanocatalyst, and correlate the results with the results on

size and shape already obtained.

1. Bio Sketch 1.1 Home Institution: University of South Florida

1.2 Major: Chemical Engineering


1.4 USF Advisor/Mentor: John Kuhn, Ph.D.

1.5 Professional Goals: Obtain a Master degree and/or Ph D, Work

for NASA for a minimum of five years,

Research in the field of renewable energy

sources, Write a book, Develop software to

interest children in the field of science that

will teach the basics of physics and

chemistry in a fun and understandable way,

Teach at a respected University.


33

Cherita Young

2. Abstract

Analysis of Fischer‐Tropsch liquid fuels through Gas Chromatography

Cherita Young1, W. Bosshart2, J. T. Wolan2

1San Jose State University

2Department of Chemical and Biomedical Engineering

[email protected]

Keywords: Fischer‐Tropsch Synthesis, gas chromatography, biofuel

In this work, qualitative and quantitative gas chromatographic (GC) analysis of biomass derived liquid

hydrocarbon fuels produced via Fischer–Tropsch synthesis (FTS) are presented. FTS is at the core of

the gas‐to‐liquids processes which have recently received a renewed interest as a versatile catalytic

route for producing high quality ultra‐clean fuels from synthesis gas or syngas (CO + H2). This interest

is mainly driven by the increasingly stringent environmental legislation on transportation fuels and

the possibility of renewable biomass sources with independence from the petroleum supply. Of

particular interest is the Fischer–Tropsch‐derived (or synthetic) diesel fuel, which displays

substantially higher cetane number (typically above 70) than that obtained in conventional refineries

from crude oil while being virtually free of environmentally harmful sulphur. An Agilent 6890N GC

with a simulated distillation capillary column was used to identify the fuel product components,

relative concentrations and % conversion. These results are then utilized for optimization of the

catalyst and reaction parameters to produce paraffinic hydrocarbon fuels in the desired diesel

fraction range of C11 – C20.

1. Bio Sketch

1.1 Home Institution: San Jose State University



1.4 USF Advisor/Mentor: John Wolan, Ph.D.

1.5 Professional Goals: I plan to pursue a Ph.D. in

engineering and continue on to

work in the Research and

Development sector in the

Alternative Energy Industry.

34

REU in Tampa Interdisciplinary Environmental Research


35

Lucas Ackerknecht

2. Abstract

Polybrominated Diphenyl Ethers in Wastewater

L. Ackerknecht1, F. Jawad2, K. Siegel2

1Cornell University

2College of Public Health, University of South Florida

[email protected]

Keywords: Polybrominated diphenyl ethers, wastewater treatment, endocrine disrupting chemicals

Polybrominated diphenyl ethers (PBDEs) are commonly used flame‐retardants that are now

ubiquitous environmental contaminants. PBDEs are of major concern due to their neurotoxic and

endocrine disrupting effects, as well as their ability to bioaccumulate in the environment.

Wastewater treatment plants are one source of PBDEs to the environment through their discharge

of effluent and land application of sewage sludge. Effluent and sludge were collected and analyzed

for PBDEs at the Howard F. Curren wastewater treatment plant in Tampa, Florida to determine the

extent of PBDE wastewater contamination and thus used as a proxy to determine PBDE exposure in

Tampa Bay residents.

1. Bio Sketch

1.1 Home Institution: Cornell University

1.2 Major: Natural Resources


1.4 USF Advisor/Mentor: Foday Jawad, Ph.D.

1.5 Professional Goals: Environmental Law


36

Barbara Araneda

2. Abstract

Student, Community, and City Working Partnerships for Stormwater Pond Maintenance

Barbara Araneda1, Maya A. Trotz2 1Civil and Environmental Engineering, University of Florida 2Civil and Environmental Engineering, University of South Florida

[email protected]

Keywords: Urban stormwater runoff, Non‐point source pollution, Water quality monitoring, Environmental awareness education, Community outreach

Unregulated, non‐point source stormwater runoff is a major pollutant contributor to coastal water

bodies, rivers, and lakes in urban areas. Despite the availability of educational media regarding

stormwater runoff, stormwater ponds, and steps individuals can take to reduce pollutant loads, a

significant percentage of the population remains unaware of the environmental and health benefits

stormwater ponds provide. In this project, educators, city, and community organizations in

Hillsborough County, Tampa were contacted for assistance in providing workshops and materials for

a student‐run, water quality monitoring study of 12 county Adopt‐A‐Ponds and 3 city managed East

Tampa ponds. The main objective of this project is to establish a baseline water quality data set

which K6‐12 students can update and manage while providing environmental education and service

to their communities. The baseline water quality data was obtained using a Quanta multimeter

probe (pH, DO (mg/L), temperature (◦C). turbidity (NTU), and salinity (mS/cm)), membrane filter

tests for total coliforms, and an Atomic Absorption Spectrometer for heavy metals (Cu, Pb, As). K9‐12

curriculum is being developed that focuses on designing, proposing, and implementing site specific

sustainable solutions such as low impact development, best management practices, and

phytoremediation floating islands.

1. Bio Sketch 1.1 Home Institution: University of Florida 1.2 Major: Environmental Engineering 1.3 Classification: Junior 1.4 USF Advisor/Mentor: Maya Trotz, Ph.D. 1.5 Professional Goals: PhD. I am interested in

Environmental Engineering, Green Chemistry, Materials Engineering, Urban Planning and Landscape Architecture. I want to work in developing communities implementing small‐scale sustainable systems, and in urban areas creating ways to maximize green spaces and urban gardening. I also want to become LEED certified.


37

Hildamarie Cáceres

2. Abstract

Anaerobic biodegradation of landfill leachate

Hildamarie Cáceres1, Anh Do2, Daniel Yeh2

1University of Puerto Rico at Humacao 2 Department of Civil and Environmental Engineering, University of South Florida

[email protected]

Keywords: Landfill, pre‐treatment, leachate, Ultrafiltration, Micro filtration, membrane, anaerobic,

biodegradation

Landfilling has become the most common and socially accepted way to dispose municipal wastes.

Generation of leachate due to rainwater percolation through the wastes has become a major

environmental concern. Landfill leachate contains high concentration of organic and inorganic

contaminants which can harm the environment and species health. This research was undertaken to

study landfill leachate treatment by anaerobic processes and investigate some filtration methods as

pretreatment in order to enhance the biodegradation of leachate in anaerobic processes. Different

sizes of filters range from Coffee filter size to Microfiltration membrane (MF) size (0.1µm) and Ultra

filtration (UF) membrane size (0.01µm) were tested. The MF and UF experiment were conducted by

a cross flow membrane system with dual membrane units. Parameters such as pressure, flow rate

were collected by an acquisition box (HOBO) which was connected to a computer. Then the

pretreated (filtered) leachate was transferred to series of serum bottles to test the biodegradability

and COD, NH4+, TS, TSS, TOC, TN removal efficiency of anaerobic processes to each type of

pretreated leachate.

1. Bio Sketch

1.1 Home Institution: University of Puerto Rico, Humacao

1.2 Major: Microbiology


1.4 USF Advisor/Mentor: Daniel Yeh, Ph.D.

1.5 Professional Goals: I want to go to graduate school and

get a PhD in Microbiology, or in a

related science that will keep my

interest. I am willing to work in

academia or industry.


38

Kassandra Costa

2. Abstract

The Effects of Soil Aging on the Extraction of Pentachlorophenol (PCP) from

Contaminated Soil

Kassandra Costa1, Jeffrey Cunningham2, Claire Osborn2

1 Brown University, Department of Geological Sciences

2University of South Florida, Department of Civil and Environmental Engineering

[email protected]

Keywords: Soil remediation, Extraction, Dechlorination

Pentachlorophenol contaminated soil poses a significant hazard both to human health and the

environment. Attempts at remediation using biodegradation have been limited by resource and time

constraints. This project is a small part of a larger initiative, called REACH (remedial extraction and

catalytic hydrodehalogenation), to design a sustainable, green technology to remediate PCP‐

contaminated soil. Previous work in solvent extraction has been inconclusive on whether or not PCP

can become irreversibly bound to soil with time. The objective of this study was to determine the

effects of soil aging on the extractability of PCP from contaminated soil. PCP was extracted from the

soil using the shaker method and analyzed on a gas chromatograph. Present results were compared

to past results to detect any differences due to aging.

1. Bio Sketch

1.1 Home Institution: Brown University

1.2 Major: Geochemistry


1.4 USF Advisor/Mentor: Jeffrey Cunningham, Ph.D.

1.5 Professional Goals: Graduate School


39

TaShae Harrison

2. Abstract Variability of Soil Organic Matter

TaShae Harrison1, David Lewis2 1Langston University

2Integrative Biology, College of Arts and Sciences, University of South Florida

[email protected]

Keywords: Soil organic matter, decomposition, moisture, topographic sequence, wetland

Soils have received attention in terms of the roles they play in tempering the effects of elevated

carbon dioxide emission and its association with global warming. Soil organic matter represents a

large stock of carbon and nitrogen storage, more than in biomass and aquatic systems. It has an

impact on greenhouse gases and the leaching of nutrients in the soil to different water systems, such

as groundwater systems, rivers, etc. The continual addition of decaying plant debris on the soil

surface helps contribute to the biological activity and the carbon cycling process taking place in the

soil. Shedding of biomass from plants is one important factor for decomposition rates, like foliage

decomposing better when compared with pine needles. The other important factor is moisture

content because it promotes plant growth, and it affects the heterotrophic microorganisms needed

for further breakdown. Organic matter variability was tested in three different ways. The samples

were taken from the University of South Florida’s Ecological Research Area. The first experiment

involved organic matter among a moisture gradient along a topographic sequence characterized by

different plants, such as upland versus wetland plants. Four toposequence positions were identified

and within each position sources of variability caused by vegetation were chosen. Under each

specific land cover ten, five‐centimeter core samples of soil were taken for further testing. The

second test involved deep cores in a toposequence position, and the final test was within a single

deep core, testing the organic matter in the different horizons. Results are tentative.

1. Bio Sketch

1.1 Home Institution: Langston University

1.2 Major: Biology


1.4 USF Advisor/Mentor: David Lewis, Ph.D.

1.5 Professional Goals: Undecided; Keeping my options open in

order to end up somewhere I am

happy.


40

Emily Henderson

2. Abstract

Estimating the impacts of nitrogen oxide from port emissions on air quality in Hillsborough County, Florida

Emily Henderson1, Haofei Yu2, Amy Stuart2 1University of Florida, Department of Environmental Engineering

2University of South Florida, Colleges of Public Health and Engineering

[email protected]

Keywords: shipping, port emissions, emission allocation, air quality modeling, NOX concentration

Port emissions are a topic of growing interest due to their potential threat to humans and the

environment, but few studies exist that both investigate high resolution air quality impacts and focus

exclusively on the Tampa, Florida region. The purpose of this paper is to estimate the impacts of

shipping emissions, especially nitrogen oxides (NOx), on the air quality in Hillsborough County,

Florida. Emission data was obtained from the US EPA’s 2002 National Emissions Inventory (NEI) and

spatially allocated to shipping lanes and ports. The spatial distribution of NOx air pollution was

estimated using the CALPUFF dispersion model. Maps of the maximum one‐hour concentration and

average annual concentration over the county showed high concentrations centralized in the area

surrounding the ports and shipping lanes, while lower concentrations were found farther away from

the ports. These results were expected because of the large amounts of pollutants emitted by ports.

It was concluded that port emissions have an impact on air quality throughout the county.

1. Bio Sketch

1.1 Home Institution: University of Florida 1.2 Major: Environmental Engineering 1.3 Classification: 5th Year Senior 1.4 USF Advisor/Mentor: Amy Stuart, Ph.D. 1.5 Professional Goals: Upon graduation, I plan to

work for several years and

return to graduate school. I

hope to ultimately work in the

green engineering field either

in a consulting firm or for the

government.


41

Wainella Isaacs

2. Abstract

Photocatalytic oxidation of model cellular membranes of E. coli Wainella N. Isaacs1, O. K. Dalrymple2, M.A. Trotz2 and D.Y. Goswami3

1University of the West Indies – St. Augustine, Trinidad and Tobago 2Civil & Environmental Engineering, University of South Florida

3Department of Chemical and Biomedical Engineering

[email protected]

Keywords: Disinfection, Lipid vesicles, Peroxidation, Malondialdehyde.

The potential use of solar‐powered photocatalytic disinfection water systems in remote and poor communities is an attractive concept and has generated much research over the last two decades. It has been applied for the inactivation of a wide range of water pathogens and may provide an effective alternative to traditional disinfection methods. Recent literature has led to the general hypothesis of peroxidation of phospholipid membranes as the main mechanism for photocatalytic inactivation of bacteria. To test the peroxidation hypothesis, previous research utilized free lipids, particularly lipids with the ethanolamine polar group which is dominant in the cell membrane of E. coli. Although these experiments yield useful information, the kinetics of cellular membrane oxidation may deviate from that of free lipids. In this work, lipid vesicles, which are excellent models of biological membranes, were prepared with similar composition and size to E. coli (the most common indicator organism). These vesicles were photocatalytically treated in a test tube batch reactor using TiO2 and UV‐A lamps. The rate of phospholipid membrane degradation was determined by the quantification of oxidation byproducts. TBARS and lipid hydroperoxide assay methods were used to assess malondialdehyde (MDA) and lipid hydroperoxide respectively. E. coli cells were also treated photocatalytically after their membrane fatty acid content was modified by the addition of supplements to their growth media. The concentrations of oxidation byproducts were compared for all experiments. The results show that the oxidation kinetics of lipid vesicles closely match the oxidation of E. coli cells in photocatalytic systems, indicating that these vesicles can aid in the development of a mechanistic model for photocatalytic disinfection.

1. Bio Sketch

1.1 Home Institution: University of the West Indies, St. Augustine, Trinidad and Tobago

1.2 Major: Environmental and Natural Resource Management and Chemistry

1.3 Classification: My program is 3 years and will be entering my 2nd year in September.

1.4 USF Advisor/Mentor: Yogi Goswami. Ph.D. 1.5 Professional Goals: At this stage of my career I am not

yet sure what further studies I wish to pursue however I intend to succeed at every task I undertake. However in the future I wish to make a significant contribution to my country’s development.


42

Caleb Jewell

2. Abstract

Algae Productivity Rates in Aquaculture and Human Wastewater Using Bench‐scale Photobioreactors

Caleb Jewell1, Sarina Ergas2 1North Carolina A&T State University

2Department of Civil and Environmental Engineering, University of South Florida

[email protected]

Keywords: Phytobioremediation, photobioreactors, wastewater

Monoculture farms and factories are increasingly relied upon to meet the numerous demands of our

growing population. The failure to remove nutrient pollutants from sewage wastewater results in

water pollution, the proliferation of disease, and a decline in the health of ecosystems. Nitrogen and

phosphorus laden effluent discharged into freshwater and marine habitats often cause algal blooms

that are anathema to the balance of aquatic ecosystems. The phytobioremediation process utilizes

algae to absorb nutrients and return an ecosystem altered by contaminants to its natural

equilibrium. This study examines the potential of incorporating algae production with fish

aquaculture farming, and human wastewater tertiary treatment. The objective of the study is to

determine nutrient removal and algae productivity rates in aquaculture and human wastewater

using bench‐scale photobioreactors. Wastewater was collected from the Howard Curren

Wastewater Treatment Plant and Mote Marine Laboratory. The two different waste media were

compared to a defined media—comprised of a commercial fertilizer, nitrogen and phosphorus.

Samples were extracted daily for a week and the following tests were performed on those samples:

Total Nitrogen, Total Phosphorus, Total Biomass, COD, and both Chlorophyll a and b. Details of the

results are pending analysis.

1. Bio Sketch

1.1 Home Institution: North Carolina A&T State

1.2 Major: Bio‐Environmental Engineering


1.4 USF Advisor/Mentor: Sarina Ergas, Ph.D.

1.5 Professional Goals: I plan to earn a Ph.D. and become a

professor.


43

Meg Lee

2. Abstract

Life Cycle Analysis of Solar Assisted Biomass Gasification Meg Lee1, Maria Pinilla2, Qiong Zhang2

1Princeton University 2Civil & Environmental Engineering, University of South Florida

[email protected]

Keywords: Life Cycle Analysis, Solar Energy, Gasification, Biofuels, GaBi, Cellulosic Biomass, Ethanol

This project will conduct a life cycle analysis through GaBi process simulation software to assess the

environmental and economical benefits and drawbacks of solar assisted biomass gasification versus

regular gasification for biofuel production. In recent years, the increase in fossil fuel consumption

has led to higher greenhouse gas emissions which have further adverse impacts on ecosystem and

human health. Accumulation of greenhouse gas emissions will hinder ozone formation which will

influence global climate by increasing mean temperatures and frequency of extreme weather events.

Biomass as a domestic renewable energy source has attracted much attention to diversify the

nation’s energy supply. Due to criticisms of food‐based biofuel, cellulosic biofuel has being under

heavy investigation. Solar energy capture is an innovative solution that has potential in improving

our current system of cellulosic biofuel generation. Solar energy collectors are implemented into the

system to provide energy in the gasification step, decreasing the energy sacrifice required for the

conversion process. This project will conduct a life cycle analysis to assess the environmental

benefits and drawbacks of solar assisted biomass gasification versus regular gasification for biofuel

production. The LCA will be conducted using GaBi which will map out the inputs, outputs, and flows

of the system using the data from process simulation and built‐in life cycle inventory database.

Environmental impacts such as energy balance, global warming potential, and eutrophification can

then be analyzed and the environmental impacts from the overall process will be assessed.

Recommendations on improvement opportunities and leverage points of the system will be made

based on the results of life cycle assessment.

1. Bio Sketch

1.1 Home Institution: Princeton University

1.2 Major: Civil & Environmental Engineering


1.4 USF Advisor/Mentor: Qiong Zhang, Ph.D.

1.5 Professional Goals: Graduate school, undecided


44

Jillianne Matus

2. Abstract

The Anthropological and Environmental Significance of Green Space in Rapid Urbanization in the Developing World City of Santa Cruz, Bolivia

Jillianne Matus1, Heather Wright Wendel2, James Mihelcic2 1Southern Methodist University

2 University of South Florida, Department of Civil and Environmental Engineering

[email protected]

Keywords: Green space, urbanization, city planning, developing world, hydrology

Rapid urbanization is increasingly becoming an issue in the developing world as people are leaving

their traditional rural way of life for greater economic opportunity in the city center. This rapid

growth in population correlates to an increase in urban sprawl and development, especially due to

improvements in the availability of both public and private transportation. City planners are tasked

with providing basic services for this rapidly growing population and creating controls for the

negative impacts of urbanization. Studies have shown that the resulting problems, including traffic,

pollution, and reduced citizen quality of life can result in the loss of productivity or even life due to

illness and disease (Araby, 2002). Because of this city planners are becoming more aware of the

practical mental health benefits of green spaces in urban environments, such as providing people

with an increased sense of ownership with the land and restoration and relief from daily struggles

(Wong 1997, cited in Maller et al. 2006). These are on top of the more tangible environmental

benefits, such as improved air quality, water pollutant filtration, increased control of stormwater

runoff and flooding, and increased groundwater recharge. The goal of this research project was to

highlight the benefits of green spaces for the people of Santa Cruz, Bolivia. This was done through

the statistical analysis of park use and interview data using the software SPSS PASW Statistics 18 and

through the analysis of historical groundwater quality and depth, meteorological data, drainage

canal development, and census data.

1. Bio Sketch

1.1 Home Institution: Southern Methodist University

1.2 Major: Environmental Engineering


1.4 USF Advisor/Mentor: James Mihelcic , Ph.D.

1.5 Professional Goals: My professional goals are to

complete at least a Master’s degree

in Environmental Engineering and

go to work in the field of

sustainable development in

developing countries.


45

Heidi Nafis

2. Abstract

Ion Exchange Removal of Perchlorate and Nitrate from Groundwater

Heidi Nafis1, Sarina Ergas2, Kristen Andre2

1 Washington University in St. Louis

2University of South Florida Department of Civil & Environmental Engineering

[email protected]

Keywords: ion exchange, perchlorate, nitrate, groundwater, anaerobic biodegradation, perchlorate

reduction, nitrate reduction, spent brine, ion exchange resin

Perchlorate has recently emerged as a contaminant of concern in the groundwater supply, with over

150 sites in 38 states that are now considered contaminated. Too much exposure to perchlorate can

lead to problems with iodide uptake in the thyroid, which interferes with growth and metabolism.

Perchlorate occurs naturally, but most of the contamination comes from rocket fuel and munitions

manufacturing. There are various ways to remove perchlorate from water, including ion exchange

and biological treatment. Ion exchange–specifically the effectiveness of ion exchange resin—was the

main focus of this individual project. Many different resins with different selectivities and

characteristics exist commercially; two perchlorate‐specific resins were tested and evaluated to find

the optimal resin for perchlorate treatment. Several ion exchange column experiments were run on

a bench‐scale using 3% and 10% NaCl solutions as regenerant for the resins. Samples were taken

periodically throughout each experiment and subsequently analyzed using an ion chromatograph.

Breakthrough curves were then generated to determine the efficiency of each resin. The “optimal

resin” was determined to be the resin that removes the most perchlorate and regenerates with the

least salt concentration. Perchlorate has a high affinity for the resins, so a good balance must be

found between effective treatment and effective regeneration. The context of this project, however,

involves both techniques. After using an ion exchange column to extract perchlorate and nitrate ions

from groundwater, perchlorate‐reducing bacteria (PRB) will be used to treat the spent ion exchange

brine and eliminate the perchlorate and nitrate.

1. Bio Sketch

1.1 Home Institution: Washington University in St. Louis

Franklin W. Olin College of Engineering


1.3 Classification: Sophomore

1.4 USF Advisor/Mentor: Sarina Ergas, Ph. D.

1.5 Professional Goals: I want to get a master’s degree in

Environmental Engineering and eventually

do service engineering work in Africa.

46

REU in Applied Physics


47

Zephra Bell

2. Abstract

Polypeptide Chirality Influences Multilayer Nanofilm Growth and Structure

Zephra Bell1, Dhan B. Khadka2, Donald T. Haynie2 1 Southern University and A & M College, Baton Rouge

2Nanomedicine and Bionanotechnology Laboratory, Department of Physics, University of South Florida, Tampa

[email protected]

Keywords: electrostatic layer‐by‐layer assembly, beta sheet

Polypeptide multilayer nanofilms are being developed for numerous applications. These include

coatings for implant devices and drug delivery systems in the biomedical sciences, and optical

coatings and filtration membranes in other areas. The film fabrication methodology, called

electrostatic layer‐by‐layer self‐assembly, is scalable and therefore suitable for industrialization. The

self‐assembling species are polyelectrolytes dissolved in solution. Subsequent polymer adsorption

steps involve polymers of opposite polarity. Here, the polymers were polypeptides. We studied the

consequences of changing polyanion chirality on film growth and structure. The peptides were

poly(L‐glutamic acid), its right‐handed counterpart, poly(D‐glutamic acid), and poly(L‐lysine, L‐

tyrosine). The first two peptides are negatively charged at neutral pH, the third one is positively

charged. Poly(lysine‐tyrosine)/poly(L‐glutamic acid) films and poly(L‐lysine, L‐tyrosine)/poly(D‐

glutamic acid) films were fabricated on 1 mm‐thick quartz plates. In one experiment, films were

grown to 34 layers. The rate of polymer self‐assembly was determined by taking the UV absorption

spectrum after each layer was deposited. Separately, UV or visible wavelength spectra were

recorded for films stained with a dye or films cooled or heated in the range 4‐65 °C. In yet another

experiment, an equimolal mixture of poly(L‐glutamic acid) and poly(D‐glutamic acid) served as the

polyanion for film buildup. The data show that poly(lysine‐tyrosine)/poly(L‐glutamic acid) films built

up at a higher rate than the corresponding right‐handed films. � sheets were shown to form in the L‐

film; this is not possible in the D‐film. Both L‐ and D‐film spectra were found to display significant

changes on film heating. These changes were reversible.

1. Bio Sketch

1.1 Home Institution: Southern University and A & M

College, Baton Rouge, LA

1.2 Major: Physics


1.4 USF Advisor/Mentor: Donald Haynie, Ph.D.

1.5 Professional Goals: To graduate in the spring of 2011 and

immediately begin a Bridge to the

Doctorate Program to earn my Ph.D.


48

Christopher Chambers

2. Abstract

Developing a Procedure for the Characterization of Mechanical Properties of

Collagen Gels

Christopher Chambers1, Garrett Matthews2

1 Northern Arizona University

2Department of Physics, University of South Florida

[email protected]

Keywords: Collagen, Microrheology

The characterization of bulk mechanical properties of type I collagen gels is critical to understanding

the role of collagen in the extracellular matrix (ECM), and developing biocompatible devices for use

in the human body. Understanding the mechanical properties of the gel state of collagen can lead to

the ability to adjust these properties for multiple uses. Here, we examined the complex elastic

modulus of the synthesized gels. This project used a microrheological approach to discover these

properties. Gels were first formed using a known process and magnetic microspheres were

embedded in the gel prior to formation. An optical microscope was fitted with a magnetic chamber

used to drive the embedded beads in two modes, an oscillatory motion and a pulse motion. Tracking

software was modified and used to analyze the motion of the beads as recorded with a CCD camera

on the microscope. These techniques should be sufficient to obtain a reliable value for the modulus

of collagen gels, as well as other similar materials.

1. Bio Sketch

1.1 Home Institution: Northern Arizona University

1.2 Major: Physics and Astronomy


1.4 USF Advisor/Mentor: Garrett Matthews, Ph.D.

1.5 Professional Goals: I intend to enter a graduate program

and I am undecided beyond that point. My main objective is to have a career in experimental physics, applied or pure.


49

Brian Demaske

2. Abstract

Development of EAM Potentials for Molecular Dynamics Simulations of

Metals at Extreme Conditions

Brian J Demaske, Vasily V Zhakhovsky, Ivan I Oleynik

Department of Physics, University of South Florida

[email protected]

Keywords: Molecular dynamics, Interatomic potentials, Embedded atom method, Ablation,

spallation, Shock wave

Large‐scale molecular dynamics (MD) simulations are an indispensable tool for investigations of high‐

strain rate phenomena within materials subjected to shock compression or irradiation by ultrashort

laser pulses. At the heart of any MD simulation are interatomic potentials that describe the basic

interactions among atoms. In order to utilize the predictive power of MD simulations, the potentials

must be able to reproduce the behavior of the system under study for a wide range of pressures and

temperatures. The goal of this work is to develop new analytical embedded atom method (EAM)

potentials for Al, Ni, Cu, and Au that can be used in simulation of metals at extreme conditions.

The development of the potentials involves three main steps. The first step consists of generating a

database that includes experimental data ‐ elastic constants, cohesion energies and lattice constants,

and first‐principles data ‐ cold stress tensor curves obtained by density functional theory

calculations. The second step involves fitting the functional parameters to the database, which in

turn produces several possible EAM parameter sets. For the final step, the best parameter set is

selected based on how well it reproduces important experimental properties not included in fitting,

such as vacancy formation and migration energies and melting temperatures. Ultimately, the newly‐

developed EAM potentials will be used in MD studies of high strain rate phenomena in metals.

1. Bio Sketch


1.2 Major: Physics


1.4 USF Advisor/Mentor: Ivan Oleynik, Ph.D.

1.5 Professional Goals: PhD in Applied Physics from the University of South Florida; Post‐doctoral research position at a national laboratory following graduation from USF; Head of computational science research group in Condensed Matter Physics.


50

Jacob Duscha

2. Abstract

Growth and Characterization of Ba8Ga16Ge30 type I Clathrate Thin Films

Grown by Pulsed Laser Deposition

Jacob Duscha1, Robert Hyde2, Devajyoti Mukherjee2, Sarath Witanachchi2

1 Macalester College


[email protected]

Keywords: Pulsed laser deposition, Thin films, Thermoelectrics, Clathrates

Ba8Ga16Ge30 thin films were successfully grown on Si (100) substrates using pulsed laser deposition.

In recent times, the bulk properties of clathrates have been extensively studied for their potential

thermoelectric (TE) applications. However, there have been few reports of thin film growth due to

the intrinsic difficulty in growing these caged structures in thin film form. Hence, a systematic study

of the growth parameters of these thin films was undertaken. Growth of stoichiometric Ba8Ga16Ge30

clathrate thin films is complicated by the non‐congruent evaporation during the ablation process.

This results in Ga or Ge deficient thin films, degrading their properties. The laser ablated plasma

plumes were hence analyzed using ICCD imaging and optical emission spectroscopy enabling

optimization of growth parameters. Film thickness profiles of various target‐substrate distances were

plotted to estimate an optimum deposition rate. Surface morphologies of the as‐deposited films

were examined using a scanning electron microscope. Structural properties were characterized using

x‐ray diffraction technique. The electrical properties of films were measured as a function of

thickness and compared to known bulk properties. This investigation provides a new direction

towards the growth of high quality thin films for potential TE device applications.

1. Bio Sketch

1.1 Home Institution: Macalester College

1.2 Major: Physics, Mathematics


1.4 USF Advisor/Mentor: Sarath Witanachchi, Ph.D.

1.5 Professional Goals: Graduate School, PhD


51

Justin Easley

2. Abstract

Electrochromic Properties of Single‐nanocrystalline Tungsten Oxide

Justin Easley1, Jason Bylsma2, Prasenjit Dey2, Denis Karaiskaj2

1 Massachusetts Institute of Technology

2University of South Florida, Optical and Laser Spectroscopy Lab

[email protected]

Keywords: Electrochromism, FTIR, Tungsten Oxide

Electrochromism is the reversible change in a material’s optical spectrum caused by applying a

voltage to the material. The material of interest in this study is Tungsten Oxide (WO3), which is used

in many commercial electrochromic devices. There are two major theories for how electrochromism

works; one concerns small polaron formation, the other involves oxygen vacancies in the lattice of

the material. We have two, single‐crystal, thin film samples of WO3, one that is pure WO3 and one

that has oxygen vacancies. We used both optical and Fourier‐transform infrared spectroscopy to gain

absorption spectra for the two samples, and also looked at temperature dependencies of the

samples on their spectra. We will use this data to try to determine the underlying theory for

electrochromism, which will lead to faster and more efficient electrochromic devices.

1. Bio Sketch

1.1 Home Institution: Massachusetts Institute of Technology

1.2 Major: Physics

1.3 Classification: Freshman

1.4 USF Advisor/Mentor: Denis Karaiskaj, Ph.D.

1.5 Professional Goals: I plan to work either in academia or

Industry either in the field of optics or

atomic and molecular physics.


52

Jahnieka Griffin

2. Abstract

High yield Bottom‐up Syntheses of Thermoelectric Materials in

Nanocrystalline Form

Jahnieka Griffin1, Jagannath Paul2, Anuja Datta2, and George S. Nolas2

1Hampton University


[email protected]

Keywords: Thermoelectric, Bottom‐up synthesis, Nanocrystals

Nanocrystals of a variety of thermoelectric materials (PbTe, Bi2Te3, and Bi0.85Sb0.15) were prepared by

different bottom‐up chemical syntheses approaches. All the syntheses approaches allowed for the

yield of the nanocrystals more than 1 gm per batch. The nanocrystals were doped with Ag and

shelled with thin Ag layer that may modify the carrier concentration and electrical conductivity to

potentially optimize thermoelectric properties in these materials. Structural characterizations were

performed by X‐Ray diffraction (XRD) and scanning electron microscopy (SEM). The prepared

specimens were phase pure within the detectable limit of XRD. The SEM revealed the nanocrystalline

structure and allowed for the estimation of the size of the nanocrystals. Composition analyses were

performed by energy dispersive X‐ray spectroscopy. Densification of the nanocrystals by spark

plasma sintering will be used to prepare bulk polycrystalline specimens with nano‐scale domains that

are of interest for thermoelectric applications.

1. Bio Sketch

1.1 Home Institution: Hampton University

1.2 Major: Physics


1.4 USF Advisor/Mentor: George Nolas, Ph.D.

1.5 Professional Goals: I plan to obtain a PhD in either

applied physics or materials physics.


53

Adam Iaizzi

2. Abstract

Ab‐initio study of folded armchair grapheme nanoribbons

Adam Iaizzi1, Lilia Woods2, Nam Lee2

1 Ithaca College

2University of South Florida, Department of Physics

[email protected]

Keywords: Graphene, Nanoribbon, Density Functional Theory, ab‐initio methods, Local Density Approximation, VASP

We present a first principles approach to the characterization of multiply folded armchair graphene

nanoribbons using the Vienna Ab‐initio Simulation Package, along with built‐in ultrasoft

psuedopotentials and the Local Density Approximation for the exchange‐correlation functional.

These tools were used to determine the energy required to produce a number of different folded

structures from unfolded armchair nanoribbons as well as to determine the energy as a function of

folded width in single fold structures.

1. Bio Sketch

1.1 Home Institution: Ithaca College (Ithaca, NY)

1.2 Major: Physics (B.S.) Minors: Economics,

Mathematics

1.3 Classification: Senior (Graduation: May 2011)

1.4 USF Advisor/Mentor: Lilia Woods, Ph.D.

1.5 Professional Goals: Finish my undergraduate degree and pursue a Ph.D. in physics. After that work in the private sector for a number of years and eventually get a tenured position at a college or university.


54

Travis Miller

2. Abstract

Growth of Graphene on Metal Substrates

Travis Miller1, Jayeeta Lahiri2, Rafik Addou2, Matthias Batzill2

1Grove City College


[email protected]

Keywords: Graphene, Carbide, Intercalation, Auger Electron Spectroscopy

Graphene, a single layer of graphite, has large potential as an electronic material. For these

applications large scale, high quality graphene wafers are required. A promising approach to achieve

this is by growth on metal substrates. In this REU project I used Auger electron spectroscopy to study

the growth of graphene on Ni(111) and its modification by Cu or Al additions. On pure nickel we

found two graphene growth regimes. Below 480 °C graphene grows by converting a surface carbide

phase while above 480 °C graphene grows on pure nickel. Addition of copper destabilizes the nickel

carbide enabling the growth of graphene in the absence of a carbide at lower temperatures. Finally,

aluminum intercalation through the Ni‐supported graphene layer was investigated in an attempt to

form an ordered Ni‐Al alloy underneath the graphene. Surprisingly, we found that this intercalation

process already occurs at only 100 °C. Furthermore, the intercalated Al is protected by the graphene

against oxidation.

1. Bio Sketch

1.1 Home Institution: Grove City College

1.2 Major: Applied Physics


1.4 USF Advisor/Mentor: Matthias Batzill, Ph.D.

1.5 Professional Goals: I am still unsure at this point. I would

either like to pursue a graduate

degree, or obtain an industry job. I

would also like to pursue a teaching

career at some point.


55

Jennifer Perry

2. Abstract

Molecular Dynamic Simulation of Oxidative Damage in Cell Membranes

Jennifer Perry1, Joseph Fogarty2, Sagar A. Pandit2

1 Drake University, Des Moines, IA


[email protected]

Keywords: Lipid bilayers, Oxidation, Classical molecular dynamics, Reactive molecular dynamics

Oxidative damage occurs in the lipid bilayers of a cell when the cell is exposed to free radicals. The

stress that is induced results in the aging of the cell. The process of lipid oxidation at the atomic level

is not completely understood. A simulation of a lipid bilayer in an oxidative environment is

preformed. First, classical molecular dynamics (MD) is used to obtain the structure of the lipid bilayer

to be passed to a reactive MD system. Resulting chemical composition of the bilayer along with

structural properties such as volumetric analysis, electron densities, form factors, and order

parameters are compared to experimental results to determine the stability of the lipid bilayer in MD

simulations.

1. Bio Sketch

1.1 Home Institution: Drake University

1.2 Major: Physics and Mathematics


1.4 USF Advisor/Mentor: Sagar Pandit, Ph.D.

1.5 Professional Goals: I plan on attending graduate school to obtain a doctorate in either Physics or Mathematics.


56

Christopher Persichilli

2. Abstract

Does Thioflavin‐T detect Critical Intermediates of Amyloid Fibril Formation by

Lysozyme?

Chris Persichilli1, Shannon E. Hill2, Tatiana Miti2, Martin Muschol2

1 Rensselaer Polytechnic University, Dept. of Physics, Troy NY


[email protected]

Keywords: Lysozyme (HEWL), Thioflavin T, Amyloid Fibrils

Deposits of proteinaceous plaques, induced by fibril growth of amyloid proteins, are responsible for

a wide range of human disorders including neurodegenerative diseases such as Parkinson’s and

Alzheimer’s Disease. Thioflavin T (ThT) is a widely used fluorescent dye used to detect fibril

formation, both in tissue samples and in vitro. Binding to the cross �‐sheet structures of mature

fibrils causes a strong increase in ThT fluorescence and a characteristic red shift. Using hen egg‐white

lysozyme (HEWL) as a model protein, we investigate whether ThT can detect various transiently

formed intermediates during amyloid fibril growth. Such intermediates are now considered the

predominant species toxic to cells and tissues. Results from dynamic light scattering (DLS) and

atomic force microscopy (AFM) indicate the presence of oligomeric intermediates which fail to

register in ThT fluorescence assay. We conclude that ThT may not be the appropriate tool for

studying the growth of the critically important toxic intermediates of amyloid fibril formation.

1. Bio Sketch

1.1 Home Institution: Rensselaer polytechnic Institute

1.2 Major: Physics


1.4 USF Advisor/Mentor: Martin Muschol, Ph.D.

1.5 Professional Goals: Graduate School


57

Advaith Rao

2. Abstract

Characterizing Surface Segregation in Fe‐Ni Nanoclusters Using Monte Carlo

Simulations

Advaith Rao1, Debosruti Dutta2, Venkat Bhethanabotla2

1 University of California at Berkeley

2University of South Florida, Department of Chemical Engineering

[email protected]

Keywords: Carbon nanotube Growth, Bimetallic nanoclusters, Monte Carlo simulations

Controlling the chirality of carbon nanotubes and by extension their apparent physical properties,

especially conductivity, is of prime importance for industrial applications of semiconductors.

Bimetallic nanoclusters have been found to impart such tuning properties to the growth of carbon

nanotubes when adsorbed before propagation, and current research has been focused on

understanding the effects of the Fe‐Ni system, specifically at which compositions control of certain

desired chiralities is optimized. However, these Fe‐Ni nanoclusters present a problem for

straightforward analysis not only because of the lattice mismatch between Ni and Fe but also due to

their different bulk crystal structures, face‐centered cubic and body‐centered cubic, respectively.

Monte Carlo simulations provide an inexpensive way to probe the properties of a range of alloy

compositions without the need for synthesis and purification in the laboratory, and are used here to

study the surface segregation of Fe‐Ni alloys as a function of composition and cluster size for the

minimum energy configurations. Analysis of these equilibrated nanoclusters indicates a migration of

Fe to the surface and the localization of Ni in the bulk or core, as is expected from surface energy

arguments, with both elements preferring their respective stable lattice structures at the local level.

1. Bio Sketch

1.1 Home Institution: University of California, Berkeley



1.4 USF Advisor/Mentor: Venkat Bhethanabotla, Ph.D.

1.5 Professional Goals: Work at major chemical companies such as Dupont, Dow Chemical, etc.; obtain MBA, and perhaps start own engineering consulting firm.


58

Andrew Ross

2. Abstract

First‐principles Investigation of Graphene‐metal Interfaces

Andrew Ross1, Lyudmila Adamska2, You Lin2, Ivan Oleynik2

1 Saint Anselm College

2University of South Florida, Department of Physics, Materials Simulation Laboratory

[email protected]

Keywords: Graphene, Ni(111) surface, Interfaces, Cu and Ni adlayers, Density functional theory

Graphene, an atom‐thick layer of carbon, has been shown to possess unique electronic properties

which make it an attractive candidate for nanoelectronics applications. Epitaxial growth of graphene

on metal substrates is one promising methods of large‐scale graphene’s wafer production. In the

case of graphene’s growth on Ni(111) surface, the small lattice mismatch between these two

materials is responsible for growth of high quality graphene samples. We present results of first‐

principles density functional theory (DFT) investigation of the structural, electronic, and magnetic

properties of graphene/Ni(111) interfaces relevant to experimental studies of graphene growth on

nickel substrates. DFT calculations were performed to identify the interface geometries and binding

sites for different interface geometries. Additional adlayers of Ni and Cu either adsorbed on top of

the graphene/metal interface, or placed below the graphene were studied in order to model

processes of metal intercalation. It is found that the fcc site is the favored binding site of graphene

on the Ni(111) substrate, and the metal adlayers on top of the graphene/Ni(111) preferentially bind

to the top graphene site. It was also found that the interaction between graphene/Ni(111) and the

top Cu adlayer is much weaker compared to that for Ni adlayer. The atomic, electronic, and magnetic

properties of these interfaces, including induced magnetic moments in graphene/Ni(111) and

{Cu,Ni}/graphene/Ni(111) systems will also be discussed.

1. Bio Sketch

1.1 Home Institution: Saint Anselm College

1.2 Major: Applied Physics; Mathematics

1.3 Classification: Senior (class of 2011)

1.4 USF Advisor/Mentor: Ivan Oleynik, Ph.D.

1.5 Professional Goals: Undecided: Graduate school or

employment


59

Susanna Todaro

2. Abstract

Optical Design of a Robotic TV Camera for Minimally Invasive Abdominal

Surgery

Susanna Todaro1, Weiyi He2, Dr. Dennis Killinger2

1 Harvey Mudd College

2 University of South Florida, Department of Physics

[email protected]

Keywords: minimally invasive surgery, medical probe, optical ray tracing

Minimally invasive techniques are a promising new field of surgery; however, they limit the

surgeon’s access points and maneuverability. In order to increase the number of access points in

minimally invasive abdominal surgery, a proposed implantable probe braces to the abdominal wall

and provides illumination and video signal. The probe is cylindrical, about 25 mm long and 10 mm in

diameter. A ring of LEDs on the end of the probe illuminates the tissue and the resulting image is

focused onto an HD digital video detector. This project seeks to determine how best to collimate

that illumination using reflectors and lenses. The system was modeled in TracePro, a ray‐tracing

illumination design software. Two LED chip geometries and three reflector geometries were

considered, and the parameters for each geometry were optimized. For the straight‐edge reflector,

the optimization was compared to experiment. The irradiance resulting from the ray tracing of these

designs were compared to each other.

1. Bio Sketch 1.1 Home Institution: Harvey Mudd College 1.2 Major: Physics1.3 Classification: Sophomore (class of 2012 1.4 USF Advisor/Mentor: Dennis Killinger, Ph.D. 1.5 Professional Goals: I’m interested in taking a few years off

after graduating in order to join the Peace Corps, work with LGBT teens, and be involved in AIDS activism. After that, I’m absolutely interested in going to graduate school for physics, and ultimately working in physics research. I’m interested by a wide variety of physics fields – from optics to solid


60

Jennifer Trinh

2. Abstract

Organic Solar Cell Microarrays for Use in MEMS

Jennifer Trinh1, Jason Lewis2, Xiaomei Jiang2

1 Swarthmore College

2Deparment of Physics, University of South Florida, Nanostructure Optoelectronics Lab

[email protected]

Keywords: Microarray, MEMS, Organic solar cell, P3HT

We have improved the efficiency of our previous microarray, which was designed for use as a DC

power supply in microelectromechanical systems devices. The microarray consists of 20 small (1

mm2) solar devices connected in series for a total device area of approximately 2.2 cm2. The device

utilizes an active layer of poly(3‐hexylthiophene) (P3HT) and [6,6]‐phenyl‐C61‐butyric acid methyl

ester (PC61BM), both of which are mixed together (1:1 mass ratio) in a solvent of dichlorobenzene in

order to form a bulk heterojunction structure. The use of dichlorobenzene in place of chloroform as

a solvent allows the active layer to dry more slowly, which has a favorable effect on the structure of

the active layer, and thus on charge carrier mobility. Under simulated AM1.5 illumination, this new

device design shows improved current and voltage values over the older design.

1. Bio Sketch 1.1 Home Institution: Swarthmore College

1.2 Major: Physics


1.4 USF Advisor/Mentor: Xiaomei Jiang, Ph.D.

1.5 Professional Goals: After I graduate from Swarthmore College, I intend to go directly to graduate school in either Experimental Condensed Matter Physics or Atomic Physics, as preparation for ultimately entering either industry or academia.


61

Bryant J. Vande Kolk

2. Abstract

Digital Gabor Holography Using Partially Spatially Coherent Light

Bryant Vande Kolk1, David Clark2, Myung Kim2

1Ripon College, Ripon, Wisconsin


[email protected]

Keywords: Digital holography, Rotating ground glass, Partially coherent light

Digital Gabor holography utilizes available numerical processing techniques to enhance the methods

from the original form of holography invented by Dennis Gabor in the 1940s. We investigate

another enhancement through the introduction of a partially spatially coherent light source that

reduces the speckle size and other noise commonly found in holography systems. In order to create

a partially spatially coherent light source, we implement a rotating ground glass into the apparatus

near the focus of the illuminating laser beam. Using two sample stages – the USAF 1951 resolution

target and 9.6μm‐diameter polymer microspheres – we further explore reduction in speckle size by

varying the distance from the illuminating laser beam focus, ground glass rotation speed, and

camera exposure time. We determine that there is a significant change in coherence and speckle

size with varying the distance from the laser beam focus; the pattern shows that a further distance

from the laser beam focus yields a less coherent light source and a smaller speckle size. After

measuring the depth of field for the refocused image with varying degree of coherence, we should

see that less coherence, or a smaller speckle size, leads to a smaller depth of field. A practical

application of digital holography is biological analysis. We replace the original two sample stages

with a suspension of live microbes and perform the imaging experiments on these new samples.

1. Bio Sketch

1.1 Home Institution: Ripon College, Ripon, Wisconsin

1.2 Major: Physics


1.4 USF Advisor/Mentor: Myung K. Kim, Ph.D.

1.5 Professional Goals: I aspire to participate in a doctorate program in physics after graduating from Ripon. Career possibilities I am currently considering include working as an industrial physicist, as a physics professor, and with a government agency such as NASA.


62

Aaron Zaubi

2. Abstract

Excitonic Structure and Polarization Dependence of CdSe and PbSe Quantum

Dots Determined by Single‐nanostructure Laser Spectroscopy

Aaron Zaubi1, Jason Bylsma2, Prasenjit Dey2, Denis Karaiskaj2

1 Cornell College

2University of South Florida, Optical and Laser Spectroscopy Lab

[email protected]

Keywords: Quantum dots, Single‐nanostructure laser spectroscopy, Photoluminescence

The focus of this project is to observe and collect data on nanostructures such as quantum dots and

carbon nanotubes. The method of single‐nanostructure laser spectroscopy allows us to observe

individual nanostructures while simultaneously removing ensemble averaging effects due to

quantum interactions between multiple structures. Photoluminescence measurements allow us to

probe the excitonic structure and properties of the samples. Examination of the polarization

dependence of the emission spectra provides insight into the structures’ internal symmetry.

1. Bio Sketch

1.1 Home Institution: Cornell College in Mt. Vernon, IA

1.2 Major: Physics


1.4 USF Advisor/Mentor: Denis Karaiskaj, Ph.D.

1.5 Professional Goals: Ph.D.; Become a professor

Poster Presentation Author Index

Presenter Poster #

Ackerknecht, Lucas 31

Araneda, Barbara 32

Arendt, Victoria 1

Beazley, Christine 18

Bell, Zephra 42

Beltran, Sergio Andres 2

Bringes, Christine 3

Browne, Jeremiah 19

Cáceres, Hildamarie 33

Calderon, Angel 4

Carter, Justin 20

Chambers, Christopher 43

Clark, Nickalaus 5

Colon, Arelys 21

Costa, Kassandra 34

Demaske, Brian 44

Duscha, Jacob 45

Easley, Justin 46

Griffin, Jahnieka 47

Harrison, Tashae 35

Henderson, Emily 36

Hinson, Justin 22

Iaizzi, Adam 48

Isaacs, Wainella 37

Jewell, Caleb 38

Lee, Meg 39

Mangual Rodriguez, Osvaldo 6

Marron Monteserin, Juan Jose 7

Martinez Avila, Edwin M. 8

Matias, Dashawn 9

Poster Presentation Author Index

Matus, Jillianne 40

Mendoza, Kenneth 10

Miller, Travis 49

Miranda, Schatzi 11

Mobley, Troy 23

Moore, Larry 12

Nafis, Heidi 41

Pearcey, Jasmine 24

Perry, Jennifer 50

Persichilli, Christopher 51

Placeres Rodriguez, Christian E. 13

Rao, Advaith 52

Richardson, Demetrius 14

Rios, Ismael 25

Rodriguez, Emmanuel 15

Ross, Andrew 53

Samuel, Yohannes 26

Sanchez, Maria 27

Silva, Hayde 28

Thompson, Curtis 29

Todaro, Susanna 54

Tosado Jimenez, Hector A. 16

Tran, Khoa 17

Trinh, Jennifer 55

Vande Kolk, Bryant J. 56

Young, Cherita 30

Zaubi, Aaron 57

Documents

NSF REU... · NSF REU DAY 2010 Interdisciplinary Research Building Galleria (IDRB) Wednesday, August 4th 2010 USF Research Park Agenda 10:00 a.m. to 11:00 a.m. Poster Set‐up 11:00