2020June 15-17

iNano-2020

Abstract Book

Webinar on Nanotechnology June 15-17, 2020

(Day 1)

Microwaves and Nanomaterials

The widespread use of microwaves for mobile communication applications has tremendously increased the elec-tromagnetic pollution related problems in environment and in Electronic devices. To shield devices from the intrusion of RF electromagnetic energy, the best method is to absorb them away. Since microwaves got long

wavelengths, making them interact with materials in smaller thickness is not easy. It has been found that a best way to deal with this problem isto incorporate 2D materials into polymers. The result of such studies with graphene will be presented. Microwaves being long wavelength radiation compared to nano meter scale dimensions, measuring the properties of nano materials in this frequency range require some indirect approaches. In measuring the properties of graphenes or nanoparticles, one method that can be employed is to embed them in a microwave transparent material and then to measure the properties of the composite.

Another important role played by microwaves is in achieving nanometer scale structures, particles and agglomerations. Sometimes similar results are obtained with ultrasonic energy. The result with microwave sintering to prevent grain growth and to retain nanometer scale grains will be presented. Also we found that such methods can result in achieving mesocrystals that are agglomeration of nanocrystals in a crystalline manner. These results would be presented

K.C.JamesRaju Centre for Advanced Studies in Electronics Science & Technology (CASEST), School of Physics, Universi-

ty of Hyderabad, Hyderabad- 500046, INDIA

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Day – Night Nano Catalysts for Clean Environment

Fenton catalysts (H2O2 / Fe 2+ ) are employed for environmental remediation through the Fenton mechanism in-volving reactive oxygen species (ROS). Storage and transportation of H2O2 limits its applications. ROS mediated oxidation process involved in Fenton process and semi-conductor based photo catalysis, is attributed for dye

degradation and antimicrobial applications in waste water Usually in latter process, semiconductor photocatalysts such as TiO2 and ZnO are being used, as these generate ROS through redox reactions of holes and electrons generated in aqueous suspensions due to absorption of light. However, there is a need for development of a catalyst that generates ROS even in absence of light so that the applications are enhanced.

In this talk, our successful efforts in the design and development of such a new catalyst ZnO2 / Polypyrrole that gener-ates ROS even in dark through synergy and its application in dye degradation in dark and light will be illustrated [1]. It is to be noted that neither ZnO2 nor Polypyrrole degrades dyes in dark or visible light. Furthermore, the rate of dye degradation of our nanocomposite is higher than that of the commercial catalyst. We have also linked photocatalytic reaction to Fenton reaction in a catalyst ZnO2 / Fe2+ that could have potential applications, as it employs solid oxidant ZnO2 in place of less stable H2O2 [2]

References

1. V. Lakshmi Prasanna , R. Vijayaraghavan, A new synergetic nanocomposite for dye degradation in dark and light (2016) Scientific Reports,, 6; 38606 -11.

2. V. Lakshmi Prasanna, R. Vijayaraghavan, Simultaneous Fenton – Photocatalytic Reactions in a New Single Cata-lyst (nano ZnO2 / Fe2+ ) for dye degradation (2017) Journal of Physical Chemistry, 121 (34), 18557–18563.

R. Vijayaraghavan Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology, Vellore 632 014,

India

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Photo-Thermal Properties of Gold Nanoparticlesand Enhancement for Blood Thermal Response

Port wine stains (PWSs) are congenital vascular malformations caused by the expansion of dermal capillaries [1]. The most effective strategy for treating PWSs is laser therapy based on the principle of selective photothermoly-sis.However, the strong absorption of epidermal melanin reduces the blood absorption to light, thereby limiting

the laser treatment efficacy.Owing to unique localized surface plasmonresonance, gold nanoparticles(GNPs) can absorb and convert laser energy into heat, yielding potential application in the laser treatment of PWSs. The photothermal con-version efficiency of GNPs is dependent on the morphology and the laser parameters.

In this study, the photo-thermal response of the GNPs withdifferentmorphologywasanalysed byfinite element method based ComsolMultiphysics software. The bulk dielectric constants of gold are obtained from Ref. [2]. The ambient me-dium is water with the refractive index of 1.33. Then an in vivo dorsal skin chamber model was prepared to investigate the thermal response of blood vessels with and without injection GNPs.

The results show that: 1) For single GNP, the temperature distribution was nearly homogeneous inside GNP and the temperature decreased with the increment of distance from the centre of GNPs. At off-resonance wavelength, the tem-perature were much smaller than that at the resonant wavelength where the maximum temperature can be obtained.For fixed laser wavelength at 532 nm, the maximum surface temperature of GNP can be obtained with the radius of 40 nm. 2) For dimers and trimers, the maximum surface temperature were stronger than that of single GNP.Besides, the temperature increased with the increment of distance between GNPs initially and then decreased. The maximum temperature can be ontained when the distance between GNPs was 5 nm. 3) The in vivo results demonstrated that much more obvious blood thermal response can be induced by laser light with injection of GNPs. After injection of4.54 mg GNPs, laser radiant exposure required forthread-like constriction of blood vessels decreased from12.5 to 9.8 J/cm2. The findings demonstrated that laser therpay combined with GNPs may be a novel strategy for thelaser treatment of PWSs with lower laser rediant exposure.

References

1. K.A. Sherwood, S. Murray, A.K.Kurbanand O.T. Tan. Effect ofwavelength on cutaneous pigment using pulsed irra-diation.J. Invest.Dermatol.,Vol. 92, pp. 717–720, 1989.

2. P.B. Johnson and R.W.Christy. Optical constants of the noble metals. Phys. Rev. B, Vol. 6, pp. 4370–4379, 1972

Bin Chen*, Linzhuang Xing and Dong LiState Key Laboratory of Multiphase Flow in Power Engineering, Xi’an Jiaotong University,

China chenbin@mail.xjtu.edu.cn

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Studies on Effect of PAN NF Supported Silver-Graphitic Carbon Nitride (Ag-Gc3n4) and Cu: Ni: Cnfs on Pho-tocatalytic and Super-Capacitive Properties

Among the nanostructures, polymeric nanofibers have gained lot of research interest in the field of nanotechnol-ogy especially in the field of composite science due to their enhanced properties as compared to micron size fibers. Their inherent properties such as high aspect ratio, porosity, stability and permeability makes them an

advanced materials with potential application in energy storage devices such as fuel cells, lithium ion batteries, sensors, filters, tissue engineering and drug delivery. The fabrication of nanofibers using electrospinning technique was widely acknowledged due to its easiness of drawing in nano form with desired properties.

Considering the importance and applicability of nanofibers, efforts have been made for the synthesis of nanofibers of various shape and size. polyacrylonitrile nanofiber (PAN NFs) supported silver-graphitic carbon nitride (Ag-gC3N4) and Cu:Ni:CNFs was fabricated by electro spinning technique. Structural and morphological studies (XRD, XPS, SEM and TEM) indicates that the spherical Ag-gC3N4 NPs were well-dispersed on the surfaces of the PAN NFs or embedded in the PAN NFs with deagglomerated form and observed the same in case of Cu: Ni: CNFs. The catalytic potential of PAN/Ag-gC3N4 NFs was developed for oxidation of organic substrate such as styrene, -CH2 bonded molecules and benzene under visible light. The visible light mediated activity of the catalyst could be endorsed to photoactive nature of gC3N4 surface. Further, Cu: Ni: CNFs were tested as a possible electrode material for supercapacitor, employing different electrochemical techniques such as CV, GCD and EIS. An impressive electrochemical behavior was observed resulting into high specific capacitance at a current density of 1 A/g compared to CNFs. The electrode material also manifests noteworthy cyclic stability with 79.98 % retention of initial specific capacitance even after 5000 cycles.

Keywords- Silver-graphitic carbon nitride (Ag-gC3N4), Cu: Ni: CNFs, photocatalytic activity, super-capacitive study and morphology study

Navinchandra G ShimpiDepartment of Chemistry, University of Mumbai,

Santacruz (East), Mumbai-400 098Email: navin_shimpi@refiffmail.com

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Towards designing nanomaterials to combat cancer through multiple facets of therapies

The major challenges in cancer therapy in the present scenario are targeted drug delivery and Multi drug resistance (MDR). Hence the delivery of drug molecules has gained equal importance as the discovery of new potent mol-ecules. Since the last two decades Nanoscience has demonstrated tremendous potential towards diagnosis and

therapy of cancer. Surface functionalized silica, carbon, magnetic and metallic nanoparticles have been developed in a tailor-made fashion for preferential accumulation at the tumor site. Polymerosomes such as self-assembled amphiphilic micelles and vesicles have been developed out of smart polymers suitably functionalized with multiple stimuli (pH, temperature and light) responsive release of anticancer drugs. Our research group has been quite active in development of diverse polymers and nanocarriers for drug delivery. The synthetic strategy, future prospective along with results of preclinical in vitro and in vivo evaluation will be deliberated in this talk. The therapeutic significance of these nanocar-riers in cocktail chemotherapy, MDR reversal and combinatorial therapy will be discussed in detail.

References:Sonal Thakore et al., Carbohydrate Polymers, 2014, 110, 338; International Journal of Biological Macromolecules, 2015, 80, 683; RSC Advances, 6(101), 98693, 2016; Carbohydrate Polymers, 2018, 181, 1003; Carbohydrate Polymers, 2019, 206, 694

BiographyDr. Sonal Thakore, Associate Professor. Dr. Sonal Thakore is an Associate Professor at The Maharaja Sayajirao University of Baro-da, India. She has a research experience of over 20 years with h-index 20, and Google scholar citations close to 2000. She has guided several students for Ph.D. and MSc. Dissertation. She has 50 international research papers, 5 book chapters and two Indian Patents to her credit. Biomimetic synthesis and characterisation of nanomaterials for biological, catalytic as well as environment applications has been a subject of extensive research of her group. Recently the focus of her study is, carbohydrate and biomolecule derived bio-compatible drug delivery systems, to address the two major challenges in cancer therapy: targeted drug delivery and drug resistance.

Sonal ThakoreCentre of Advanced Studies in Chemistry Department of Chemistry, Faculty of Science The Maharaja Saya-jirao University of Baroda, Vadodara 390 002, Gujarat, India Email: drsonalit@gmail.com, m : 9428430422

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Nanomaterial using graphene based THz antennas for flexible electronics

The graphene nanomaterial is lately being used as patch material as it possesses a number of desirable electro-magnetic and mechanical properties that assists in providing flexible and reconfigurable antenna structures. It is apparent that graphene composite is an effective alternative to metal for the antenna structure offering simplicity

in design. Very little attention has been given to explore the pioneering approach of using graphene material’s tunable conductivity, which accounts for the superior electromagnetic properties improving the performance of antennas in ter-ahertz (THz) regime. In addition to achieving the main objectives for this webinar of designing miniaturized terahertz antenna, an endeavor has been done to obtain enhancement in the performance of a graphene based terahertz antenna by incorporating two dimensional photonic band gap (PBG) crystals in the substrate. Graphene as patch conductor on photonic crystal substrate material brings about high bandwidth, radiation efficiency and highly directional resonant antenna. Apart from efficient radiation properties and sufficient miniaturization of the graphene based THz antennas, their simplicity in designing and tunability characteristics makes it feasible to realize wireless communication devices integrating with other passive/active components for more flexible applications communicating at faster rates.

Keywords:Flexible electronics, Graphene as nanomaterial, THz regime, PBG

BiographyDr. (Mrs.)RajniBalais Assistant professor in Electronics and Communication Engineering Department at National Institute of Tech-nology (NIT) Kurukshetra, Haryana since Aug. 2017. She did her B. Tech and M.TechinElectronics & Comm. Engg. in 2010 and 2012 respectively. She completed her Ph. D. Degree in Electronics from SLIET,Longowal in the year 2016 withspecialization in the field of ‘‘Miniaturized Resonant THz Antennas for Wireless Communicationby FiniteElement Method with applications to Commu-nicationEngg., Microwave and Antennas’. She is a LifeMember of ISTE, New Delhi and Member ofInstitution of Engineers, India. She has more than 30publications to her credit in International and NationalJournals of repute SCI and non-SCI. She is a Reviewer and Editor of various international and national journals/ conferences. She won the best paper award at International conference held at Bankok, Thailand in 2015.

Dr. Rajni Bala, Ph.d, M.tech, B.tech (Ece)Faculty (Assistant Professor), National Institute of Technology Kurukshetra, Pin code: 136119, Haryana,

India Mail id: rajnisliet@gmail.com Phone No: +91-9463707000, +91-9417710001

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Optimizing Deposition of Platinum Nanoparticles on Functionalized Graphene Oxide

In this research, we explored different parameters for depositingplatinum nanoparticles on sulfonated graphene oxide (S-GO). Platinum nanoparticles (NPs) were formed in situ by reduction of a platinum precursorwith sodium borohy-dride in presence of a S-GO matrix. Prior to the deposition, GO was functionalized with sulphonic acid groups using

a method developed in Professor Howard Fairbrother’s research laboratory to improve the colloidal stability of GO in aqueous medium. The deposition process was optimized by varying the ratio of platinum precursor to S-GO (mass). The deposition was found to rely on the ratio of platinum cations to NaBH4 (mole) as well as the reaction temperature and time. Chemical changes in GO due to reduction were followed withFourier-transform Infrared Spectra (FT-IR)while elemental analysis was carried out by X-ray Photoelectron Spectroscopic technique (XPS), and size and shape of the platinum NPs was confirmed by analyzing Transmission Electron Microscopic (TEM) image.

BiographyNur AhamadProfessorDepartment of Chemistry, Shahjalal University of Science and Technology, Bangladesh

Professional Preparation:Fulbright Visiting Scholar (09/2016-05/2017): Department of Chemistry, Johns Hopkins University, USA.PhD in Chemistry (09/2006-06/2012): Department of Chemistry, Carleton University, CanadaMSc (Physical) and BSc (Chemistry) (1996-2000): Department of chemistry, Shahjalal University of Science and Technology, Bangladesh.

Appointments:Professor(2016-present), Associate Professor (2013-2016), Lecturer (2004-2006).

Research Interest:Synthesis of (I) metal and metal oxide nanocrystals and their application in development of plasmonic solar cell and environmental remediation, and (II) nanocomposite consisting of carbon based nanomaterials and polymers for catalysis and textile products.Professional Involvement: Members of American Chemical Society, Canadian Society for Chemistry, Bangladesh Chemical Soci-ety, JSPS-HOPE

Nur Uddin Ahamad1*, Howard Fairbrother2, Benjamin P. Frank3 and Leslie Sigmon4

1Department of Chemistry, Shahjalal University of Science and Technology, Bangladesh2,3,4Department of Chemistry, Johns Hopkins University, USA

Presenting Author*nur-che@sust.edu, 880-821-713491Ext 251

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Silver Nanoparticles Decorated on Biocompatible Silk Fibroin Films for Thermoelectric Wireless Switching Applications

In this paper, we loaded silver nanoparticles (AgNPs) on silk fibroin matrix by using UV-irradiation technique. Here the SF acts as stabilizer and reducing agent. Silver nitrate is added to the prepared silk fibroin solution at different combinations to obtain the silver nanoparticles. The silk fibroin (SF)-silver nanoparticles (AgNPs)colloidal solution

is used to prepare free standing biopolymer-nanocomposite (SF-AgNPs BNCs) films. The prepared SF-AgNPs BNCs were characterized with XRD, TEM, DSC and TGA-DTG to study its physical properties and application, AC conduc-tivity, and dielectric properties. It was observed that AgNPs changed the structural, thermal, dielectric, and AC conduc-tivity of the Silk fibroin films. The Silk fibroin films possess good conductivity with the presence of AgNPs, hence can be used in bio- sensor and thermoelectric wireless switching applications.

Keywords: Silver nanoparticle; Silk fibroin; XRD; TEM; Thermal properties; Electrical properties;

C S Shivananda1*, B Lakshmeesha Rao2 and G Parameshwara Gouda1

1Department of Physics, KLE Society’s S Nijalingappa College, Bangalore – 560 010, India2Department of PG Studies and Research in Physics, Sri Dharmasthala Manjunatheshwara College (Auton-

omous), Ujire – 574 240, India*Corresponding Author: shivu.msc@gmail.com

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Nano-Sized Metal Oxides as Electrical, Optoelectronic Humidity and LPG Sensors

Present paper deals synthesis and characterizations of nano-sized metal oxides like La2O3, Nd2O3, Nb2O5, ZnO, ZnNb2O6, ZnTiO2 and ferrites akin to Fe2O3, NiFe2O4 and ZnFe2O4. The sensing materials were characterized by SEM, XRD and UV-Visible spectroscopy.The sensing elements of sensing materials as pellet, thick and thin films

were fabricated and their comparative humidity sensing properties were investigated. The variations of resistance at dif-ferent value of %RH of the sensing elements were measured. The minimum crystallite size of ZnFe2O4 calculated from Scherrer’s formula is found to be 3.57 nm. The average sensitivities of ZnFe2O4 pellet, thick and thin film were calculat-ed as 35.3, 44.7 and 48.21 MΩ/%RH and the results were found to be reproducible with ±6, ±4 and ±2% respectively. The Optoelectronic humidity sensing properties ofZnFe2O4 films were investigated at different angles of incidence. The maximum average sensitivity was observed as 7.8μW/%RH at angle of incidence 55o. Also the variations in electrical-resistance of the film were measured with the exposure of different vol % of LPG as a function of time. The fabricated ZnFe2O4 film exposed the maximum values of sensitivity and percentage sensor response i.e. 16 and 1785, respectively, for 5 vol.% of LPG. These experimental results show that nanostructured zinc ferrite is a promising material for humid-ity and LPG sensors.Best sensitivity, less hysteresis and good reproducibility identify that fabricated ZnFe2O4 humidity sensor is promising and challenging.

Biography

Dr. RichaSrivastava.Faculty, BabasahebBhimraoAmbedkar University, Lucknow.Dr. RichaSrivastava has received her Ph.D. Degree in 2008 from Department of Physics, University of Lucknow, Lucknow, India. She has published 41 research papers in reputed journals and02 book of international publisher. She has delivered 11 invited talks and has 03 abroad visits for presented of research papers.Her total citation of research papers is 645, h-index is 14 and i10 index is 18. She is a recipient of CST Young Scientist Award-2014-15 under Council of Science and Technology, ISCA Young Scientist Award- 2013 and ISCA-Best Poster Presentation Award under Indian Science Congress Association and G.C. Jain Memorial Prize for Best Thesis-2008 under Materials Research Society of India. Her current interests in research are “Synthesis and Characteriza-tion of nanomaterial and their application as humidity, Gas temperature and Pressure sensors”.

Richa Srivastava*

University Institute of Engineering and Technology BabasahebBhimraoAmbedkar University, Lucknow-226025

*Email: richadolly@rediffmail.comTel:(+91) 9415313393, 6307652144

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Webinar on Nanotechnology June 15-17, 2020

(Day 2)

Properties of a lead free solder measured by conventional methodes and by nanoindentation

Elastic and viscous properties including Young’s modulus, hardness, creep rate sensitivity, and fatigue resistance of the Sn1.2Ag0.5Cu Ni lead free solder have been investigated. Bulk specimen and in situ solder are examined for comparative purposes. Experiments show the good correlations of Young’s modulus and creep rate sensitivity

measurements between conventional measurements and nanoindentation results on bulk specimen. Further mechanical properties of in situ solder are characterized by nanoindentation. The fatigue resistances of bulk specimen and in situ solder are compared by using the novel nano impact method. It is found that in situ solder has a higher Young’s modulus value, smaller creep strain rate sensitivity, and a better fatigue resistance as compared to bulk specimen. The effects of soldering and the scale differences strongly changed the mechanical and fatigue properties of in situ solder.

Keywords: Lead free solder, Modulus, Creep, Nano indentation, Nano impact, Inter Metallics

N.Ranganathan, Professeur EméritusLaboratoire Lamé ;

Université de Tours,7 Avenue Marcel Dassault, 37200, France

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2D materials in field-effect transistors:effects of pressure, temperature and e-beam irradiation

2Dmaterials have been the subject of intense research in the past decade for their electrical behavior tunable by the number of layers, the strong interaction with light, the absence of dangling bonds enabling the formation of van der Waals heterostructures, the mechanical strength and the chemical stability.

In this study we fabricate back-gate field-effect transistors using nanosheets of layered materials such as MoS2, PdSe2 or GeAs, deposited on SiO2/Si substrate and contacted with different metals. We report the effect of gas pressureand e-beam irradiationon the electrical transport of MoS2 and PdSe2nanosheets. We show that gas adsorption enhances the hysteresis in the transfer characteristics of the transistors and that gas pressure controls the polarity of the devices, mak-ing n-type conduction dominant in a high vacuum. We exploit the n-type conduction to extract a field emission currentin high vacuum. We also investigate the temperature dependence of the electrical conductivity of GeAs nanosheets and report an anomalous peak in the 2D carrier density at temperature around 75 K, that we interpret as the manifestation of a 2D conduction phenomenon.

Fig. 1 (a) Back-gate transistor with PdSe2 channel. (b) Effect of gas adsorption on the transfer characteristics of a MoS2 transistor. (c) Field emission from a PdSe2nanoflake. (d) Carrier density vs. temperature in a GeAs nanosheet

BiographyDr. RichaSrivastava.Faculty, BabasahebBhimraoAmbedkar University, Lucknow.Dr. RichaSrivastava has received her Ph.D. Degree in 2008 from Department of Physics, University of Lucknow, Lucknow, India. She has published 41 research papers in reputed journals and02 book of international publisher. She has delivered 11 invited talks and has 03 abroad visits for presented of research papers.Her total citation of research papers is 645, h-index is 14 and i10 index is 18. She is a recipient of CST Young Scientist Award-2014-15 under Council of Science and Technology, ISCA Young Scientist Award- 2013 and ISCA-Best Poster Presentation Award under Indian Science Congress Association and G.C. Jain Memorial Prize for Best Thesis-2008 under Materials Research Society of India. Her current interests in research are “Synthesis and Characteriza-tion of nanomaterial and their application as humidity, Gas temperature and Pressure sensors”.

A. Di Bartolomeo1,2, E. Faella1, F. Giubileo2, A. Grillo1,2, L. Iemmo1,2, A. Pelella1,2, F. Urban1,2

1Physics Department “E. R. Caianiello”, University of Salerno, Via Giovanni Paolo II, 132, 84084 Fisciano, Italy. E-mail: adibartolomeo@unisa.it, Tel: +39 089 969189

2CNR-Spin, Via Giovanni Paolo II, 132, 84084 Fisciano, Italy

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Nanotechnology in Composite and Foam Materials for Thermal Management

The electronics industry (micro-, opto- and power electronics) urgently demands the development of materials capable of dissipating the enormous amounts of heat generated by operating today’s increasingly powerful equip-ments. This growing need has led to an unprecedented revolution in the development of materials for thermal

control in recent years.

The materials currently being nominated as the best third-generation heat sinks are metal matrix composites with car-bon-based reinforcements (i.e. diamond particles or graphite flakes). Different studies on the subject have shown that in order to achieve the necessary thermal conductivity properties in these materials it is not advisable to use nanodi-mensioned reinforcements, as these present a large interface surface with the metal and therefore many losses in heat transport. The dimensions of the reinforcements used have ranged from a few micrometers to several millimeters. The physical limits for thermal conductivity in these composite materials were established on the basis of the intrinsic conductivities of the starting materials (matrix and reinforcement) and on the basis of the interfacial conductances for each metal-reinforced pair. However, the growth of nanodimensioned crystalline materials at the interface has allowed nanotechnology to play a fundamental role in reaching new physical limits of thermal conductivity in these composite materials.

In this presentation, the author reviews the significant advance in recent years in composite and foam materials for thermal control, placing special emphasis on those materials that present excellent thermal conductivities due to the presence of new interfacial products with dimensions at the nanoscale.

BiographyDr. José Miguel Molina Jordá graduated in Chemistry from the University of Alicante (Spain), where he completed his PhD in the area of composite materials. He did a postdoctoral stay in Switzerland, at the ÉcolePolytechniqueFédérale de Lausanne (Swit-zerland). He is Associate Professor at Alicante University and the leader of a group devoted to manufacture and characterize new composite and foam materials for various applications, including materials used for heat exchange. He has published more than 75 papers in reputed journals and patented various materials and manufacturing processes for applications related to thermal manage-ment in electronics.

José Miguel Molina JordáUniversity of Alicante, Spain

E: jmmj@ua.esT:(+34) 965903400 (2055)

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Microchannel-enhancedwater collection from air

Dew water, that is atmospheric vapor condensation by passive radiative cooling, can be collected to provide to humans a new source of fresh water. However, it is still a challenge to collect by gravity the dew small droplets (it is more generally the case with all small condensates). Small droplets indeed remain usually pinned to in-

clined surfaces because their weight cannot overcome the pinning forces. In order to solve this problem in a passive way, different strategies can be considered. One is to consider very smooth surfaces where the pinning forces are small – but this quality is quite difficult to maintain under outdoor conditions. Another solution uses edge effects. On edges, droplets grow faster and then detach sooner than on the surface, acting as natural wipers. An alternative strategy is to enhance droplet coalescence to produce a few large drops detaching rapidly instead of a myriad of pinned tiny droplets. In this aspect, sub-millimeter grooves appear to substantially increase dew collection by modifying the repartition of liquid. Because of a long-range coalescence mechanism mediated by grooves imbibition, the growth and shedding of large drops can be accelerated. Such findings increase the passive harvesting of dew and the drainage of other condensates

Keywords: Dew atmospheric water; Passive water harvesting; Microchannels;

BiographyDaniel Beysens, PhD in Physics and in Engineering is a specialist of phase transition with emphasis on dropwise condensation. He is the co-founder and President of OPUR International Organization for Dew Utilization. He teaches at the University Paris Diderot in Paris and is also honorary Director of Research at EcoleSupérieure de Physique etChimie Paris. With his team he carries out there experimental and theoretical study on dew condensation and phase transition. He started the field at the Alternative Energies and Atomic Energy Commission (CEA) when he was Head of Institute. He is associate editor of several scientific journals and has authored many books and scientific publications. He was awarded various prices and honors in Physics and Environmental Sciences.

Research Interests:

Phase transition with emphasis on water collection from air. Experimental and theoretical study on dew condensation and phase transition.

Daniel Beysens, PhDOPUR and PMMH-CNRS-ESPCI Paris -PSL University, Paris, France

Mail id: daniel.beysens@espci.frPhone No: +33) 06 89 86 47 17

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Cobalt Nanomaterials Applied to Water Remediation

The problem of water pollution,water resource management and the high cost of hazardous waste site remediation is a notorious reality known for decades. Nanomaterials enable the applicationof new strategies and solutions in the field of water purificationand are seen as the most promising solution to battle water scarcity. During the last

decade, many types of nanomaterials have been developed and widely tested for the remediation of environmental con-taminants from contaminated water. Heavy metals and metalloids like Pb, Cd, Hg, Zn and as are among the ubiquitous trace contaminant of aquatic environment and ecosystems. Nanomaterial-based remediation is now considered as real-istic andhas specific potential to treat organic and inorganic pollutants. However, the main obstacle remains the transfer from laboratory studies to full-scale and real-case applications (i.e. scaling-up and cost effectiveness). This talk will introduce some of the advances in the field and our recent investigations with superparamagnetic cobalt metal nanoma-terials and nanocomposites. We recently demonstrated that it is possible to magnetically extract metallic pollutants (Pb, Zn, Cu, Fe, Mn, Sn) with high yield. To industrialize the technology, we have developed a sand based nanocomposite that exhibits similar extraction properties bya single passage through the filter. Pb2+ and Fe3+ contaminations decreased from 65ppm to 1,2ppb and from 34ppm to below the detection limit, respectively.Many water samples were tested (lake water, well water, oily water, ground water) and even complex pollutants like uranium and arsenic were successfully extracted with a high efficiency.European Regional Development Fund project EQUiTANT (TK134)and project EMÜ P200030TIBTare acknowledged.

BiographyErwan Rauwel, Professor habil. at Inst. of Technology, Estonian University of Life Science (EMÜ)

Erwan Rauwel received his Ph.D. degree from University of Caen in Materials science in 2003. He continued with postdoctoral studies at Minatec, Grenoble, France and at the University of Aveiro, Portugal as a Marie Curie fellow. In 2009, he has been Senior Researcher at University of Oslo (development of ultrastable metal nanoparticles synthesis). From 2013 to 2018, he was Professor at Taltech. He is now Professor at EMÜ where his team is investigating the properties of metal nanoparticles for water purification and biomedical applications, they also investigate on carbon-based hybrid nanocomposite for photocurrent generation and energy har-vesting. He has more than 63 peer-reviewed publications with H-index=21, 4 book chapters and 5 patents (4 personally authored).

E. Rauwel1,2 , P. Rauwel1,2, L. Simonelli3, C. Marini3, Ü. Soukand4, O. Volobujeva2, M. Rosário Soares5

1Institute of Technology, Estonian University of Life Science, Tartu, Estonia2Faculty of Engineering, Taltech, Tallinn, Estonia

3CELLS—ALBA Synchrotron Radiation Facility, Barcelona, Spain4EKUK, Vaksali 17a, Tartu, Estonia

5CICECO- Aveiro Institute of Materials, University of Aveiro, PortugalEmail: erwan.rauwel@emu.ee

Tel: +372 7313301

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Ionic dynamics in nanostructured hybrid perovskites: insights from classical molecular dynamics

Hybrid organic-inorganic perovskites have emerged as the most promising hybrid material for low-cost solu-tion-processable photovoltaics. In addition to the excellent optoelectronic and transport properties due to the inorganic Pb-I network and to its high tolerance to electronic defects, hybrid perovskites films have peculiar

properties associated to the hybrid organic/inorganic and covalent/ionic nature, making it a very versatile material for nanotechnologies. In this seminar, by means of atomistic simulations based on an interatomic force-field developed by the Author for hybrid perovskites[1], it is discussed the physical origin and the technological potential of a selection of properties associated to ionic dynamics: the dielectric response and the macroscopic polarization[2]; the ultra-high and anisotropic mobility of ionic defects[3]; the interaction of de-fects with surfaces[4] or grain boundaries[5] and their relevance for hysteresis and memory effects.

1. A. Mattoni, A. Filippetti, and C. Caddeo, “Modeling hybrid perovskites by molecular dynamics,” J. Phys. Condens. Matter, vol. 29, no. 4, p. 043001, Feb. 2017.

2. A. Mattoni and C. Caddeo, “Dielectric function of hybrid perovskites at finite temperature investigated by classical molecular dynamics,” J. Chem. Phys., vol. 152, no. 10, p. 104705, Mar. 2020. 3. P. Delugas, C. Caddeo, A. Filippetti, and A. Mattoni, “Thermally Activated Point Defect Diffusion in Methylammonium Lead Trihalide: Anisotropic and Ultrahigh Mobility of Iodine,” J. Phys. Chem. Lett., vol. 7, no.

13, 2016. 4. C. Caddeo, A. Filippetti, and A. Mattoni, “The dominant role of surfaces in the hysteretic behavior of hybrid perovskites,” Nano Energy, vol. 67, p. 104162, Jan. 2020. 5. N. Phung et al., “The Role of Grain Boundaries on Ionic Defect Migration in Metal Halide Perovskites,” Adv. En-

ergy Mater., vol. 1903735, p. 1903735, Apr. 2020. Keywords: hybrid perovskites; photovoltaics; atomistic simlations; molecular dynamics; hysteresis; point-defects.

BiographyAlessandro Mattoni, received a master degree in physics at the University of Perugia and a PhD in solid state physics at the Unive sity of Padova. He is staff researcher of the Italian Council of Research and in charge of the unit of Cagliari of the Istituto Officina dei Materiali, where he coordinates the theory group on the multiscale modeling of nanomaterials. A. Mattoni is author of more than 100 papers on international journals and coordinator of several projects on hybrid materials for photovoltaics and energy; he has been the principal investigator of several high-performance computing projects. A.M. developed the first interatomic force-field for classical molecular dynamics of hybrid perovskites. Research Interests: Theoretical and computational methods for atomistic and multi-scale modeling of functional hybrid nanoma-terials. Classical molecular dynamics, electronic structure methods including semi-empiricial tight binding and ab initio methods.

Alessandro MattoniIstituto Officina dei Materiali, National Council of Research, CNR-IOM CA, Monserrato, CA, Italy

Mail id: mattoni@iom.cnr.it Phone No: +39 070 6754868

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Electrical properties of materials and devices based on networks of 1D nanostructures

This work reviews the electrical transport in random networks of 1D nanostructures, such as inorganic nanowires and carbon nanotubes, emphasizing their implications in solid state devices. The goal is providing an overview of the importance of these materials in the future technology and the challenges that the scientific community is

facing to progress our understanding of these phenomena and our capability to exploit them in functional devices. Con-cerning potentialities, these materials offer the opportunity to finely control the properties of elementary nanostructures and realize macroscopic layers by means of cheap fabrication methods.Indeed,several papers reported theirsuitability for the development of a broad range of devices, including solar cells, transparent electrodes, gas- and bio-sensors. As for challenges, these relies in the complex interplay between the distribution of microscopic elements in the network, their individual properties and the way in which they control the macroscopic functionalities of the network. Besides the promising results achieved so far, the understanding of these phenomena is still partial, hindering our capability to take full advantage of the underlying potentialities.

These potentialities and challenges are here overviewed and discussed with particular reference to conductometric gas-sensors

Key words: Networks, nanowires, carbon nanotubes, gas sensors, transparent electrodes

BiographyAndrea Ponzoni (AP) graduated in Physics at the University of Parma (Italy) and got the PhD in Materials Engineering from the University of Brescia (Italy). AP had then a post-doc positionsat the University of Bresciaand at the Italian National Research Coun-cil (CNR) till 2011. Since Nov. 2011 he is member of the permanent staff of CNR as Research Scientist. In his carrier, AP worked on the development of solid state gas sensors based on nanostructured materials such as metal oxide nanowires and nanoparticles, carbon nanotubes, ceramic composites and graphene. He further worked on the exploitation of these materials and sensors in more sophisticated sensing systems such as electronic noses and their application in fields including environmental monitoring, agro-food, safety and security.Recently, he also dedicated to the investigation of networks and networking effects in the mentioned materials and devices. AP activities have received funding through national and EU projects. At EU level, AP was the scientific responsible for the CNR unit in the SNOOPY project ‘Sniffer for concealed people discovery’ (2014-2016) and is currently the coordinator of the SCENT project ‘One dimensional, single-chain polymers for gas sensors through high-pressure technology’ within H2020-AT-TRACT (2019-2020). AP is member of the editorial board of the MDPI-Chemosensors journal and is Guest Editor of the Special Issue ‘Gas Sensing Materials’ for the MDPI-Sensors journal.

Research Interests: Nanostructured materials, including metal oxide nanowires and nanoparticles, carbon nanotubes, ceramic lay-ers, with emphasis on their electrical properties and their exploitation as gas sensors or transparent electrodes. Networked materials. Application of gas sensors in medicine, agro-food, safety and security fields.

Andrea PonzoniUnit of Brescia, Italy

E: andrea.ponzoni@ino.cnr.itT: +39-349-2322501

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Surface Functionalization with Self-Assembled Monolayers of Ordered Small Organic Molecules: The Example of Non-Charged New“Push-Pull” Chromophores

Self-assembled monolayer(SAM) is among the most promising strategy for giving large surfacesspecific properties controlled at nanoscale with organized organic molecules (1). The motivation of developing SAMs of small or-ganic molecules will be illustrated by some examples of controlling the molecular structuration on silicon surfaces

(2). How organization at the molecular scale acts on electrical and optical properties of molecular chromophores will then be particularly discussed through some examples: structure-electrical properties relationship probed by STM and spectroscopy (3) where the dispersion of electrical properties has been clearly related to the disorder of the SAM, and the SAM of novel non-charged push-pull thiophene-based chromophores (4). For the latter, dense SAM formation of such non-charged donor-acceptor chromophores, either by direct grafting or by using a sticking monolayer, is for the first time clearly demonstrated by spectroscopy (XPS, UV-vis, IR, SERS), ellipsometry, scanning probe microscopy (STM, AFM), and electrochemical measurements. Besides, good film quality is highlighted and local I-V characteristics measured by STM exhibit electrical rectification. Such I-V curves are correlated to UPS (filled states) and IPES (empty states) measurements and are consistent with the structure of the SAM-organized push-pull molecules standing upright at the surface (4). This unique combination of properties makes such SAM a system of choice for the foreseen applica-tions like in the field of photovoltaic energy conversion with organized and tunable donor/acceptor moieties (5), optical rectenna (6), and self-assembled nanodielectrics with oriented dipoles (7).

1. A.Ulman, An introduction to ultrathin organic films (Academic Press: Boston, 1991)2. S.Desbiefet al., Phys.Chem.Chem.Phys. 13, 2870 (2011); RSC Adv. 2, 3014, (2012); L. Patroneet al., Langmuir

26(22), 17111 (2010) ; V.Gadenne, et al., RSC Adv. 4(110), 64506 (2014) ; Y.Dufilet al.,Appl.Surf.Sci508, 145210 (2020)

3. X.Lefèvreet al., J.Phys.Chem.C 119(10), 5703 (2015)4. V.Malytskyiet al., RSC Adv. 5, 26308 (2015); Tetrahedron 73, 5738 (2017)5. V Malytskyiet al., RSC Adv. 5, 354 (2015)6. C.A.Reynaudet al., J.Nanopart.Res. 19, 394, (2017)7. A.Facchettiet al., Adv.Mater. 17, 1705 (2005)

Malytskyi V. (1,2), Guerboukha M.A. (1)Dufil Y. (1), Kionga-Kamau E. (1), Gadenne V. (1), Ksari Y. (1),Simon J.-J. (1), Raimundo J.-M. (1,2), and

Patrone L. (1)

(1) Aix Marseille Univ, Université de Toulon, CNRS, IM2NP UMR 7334, Campus St Jérôme, 13397 Marseille cedex 20, France

&Yncréa Méditerranée, ISEN-Toulon, Maison du Numérique et de l’Innovation, Place G. Pompidou, 83000 Toulon, France

(2) Aix-Marseille Univ, CINaM UMR CNRS 7325, case 913, 13288 Marseille cedex 09, France

Email:lionel.patrone@im2np.frTel:+(33) (0) 483 361 984

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BiographyDr. Lionel Patroneis experimental research physicist at CNRS.

After an engineer degree in physics, he obtained a master degree and a PhD in materials science from Aix-MarseilleUniversity in 2000. Afterwards, he was appointed as lecturer-researcher at Grenoble University/CNRS and then worked two years at CEA/Saclay in the field of molecular electronics. He joined IM2NP within ISEN-Toulon engineering school in 2002 where he has developed a research activity in molecular electronics. Since then, he has been involved in various projects related to self-assembled molecu-lar monolayers and their application in molecular electronics, (supervision of 6 PhD theses and several post-doctoral researchers, scientific manager of various projects). He has also been involved in various responsibilities and he is co-leader of the “Nanostruc-turation” group of IM2NP.He is also associate professor at ISEN-Toulon. He is author or co-author of 46 scientific papers, ~150 conferences and communications.

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Functionalized Silica and Titania Nanocatalysts for Sustainable Chemicals

Biomass represents, nowadays, one of the most interesting alternatives to the fossil source for chemicals and en-ergy. [1-3] Both components of biomass (cellulosic and triglycerides part) were used as starting materials for the achievement of sustainable chemicals and fuels by the use of suitable functionalization of solid nanocatalysts.

In this presentation, the design, synthesis and application of the nanomaterials follow the principles of circular chem-istry by using waste materials, green solvents and recycling of the material. Moreover, particular attention is due to the efficiency and sustainability of all the chemical processes.In particular, different types of functionalized silica or titania catalysts are applied to the biomass exploitation, both to production of biofuels and for the obtainment of added-value products such as HMF, GVL or diols. As concern the func-tionalization of support, both with acid organic frameworks and with metals catalytic functions are being considered. Moreover, the surface and structural properties of the catalysts analyzed by several techniques, allowed to correlate their catalytic performances with their physical and chemical properties. [4-8]

References 1. M. Climent, A. Corma, S. Iborra, Green Chemistry 2014, 16, 516–547; 2. Shokouhimehr, M. Catalysts 2015, 5, 534–560; 3. Aejung, K.; Mahdi, S.; Shahrouz, A.; Shokouhimehr, M. Energy Environ. Focus 2015, 4, 18–23; 4. M. L. Testa, G. Miroddi, M. Russo, V. La Parola, G. Marcì Materials, 2020, 13, 1178-1189; 5. L. Aguado-Deblas, R. Estevez, M. Russo, V. La Parola, F.M. Bautista, M. L. Testa Materials, 2020, 13, 1584-1600;

M.L. Testa, V. La Parola, L.F. Liotta, A.M. Venezia Journal of Molecular Catalysis A, 2013, 367, 69-76; 6. N. Date, V. La Parola, C.V. Rode, M. L. Testa Catalysts, 2018, 8(6), 252-268; 7. M.L. Testa, L. Corbel-Demailly, V. La Parola, A.M. Venezia, C. Pinel Catalysis Today, 2015, 257, 291-296

BiographyMaria Luisa Testa is a Permanent Research Chemist at Institute for the Study of Nanostructured Materials (ISMN) of the Italian National Research Council (CNR).

She completed her undergraduate studies in Palermo University (Italy) and the European PhD at Valencia University (Spain). Now-adays, her research interests span from environmental heterogeneous catalysis, design and synthesis of organic-inorganic catalysts and development of supported metal catalysts applied to the transformation of biomass components, both in biofuels and platform molecules. Part of the research involves in synthesis of hybrid materials for wastewater purification. She had various research in-ternational experiences (India –CSIR; France – IRCELYON; Spain-Cordoba and Valencia Universities; Ireland–Cork University; Bulgaria-Academy of Science). Author of more than 80 works (papers, patents and congress presentation)

Maria Luisa TestaIstituto per lo Studio dei Materiali Nanostrutturati, ISMN-CNR, Via Ugo La Malfa 153, 90146, Palermo,

ItalyCorresponding author: marialuisa.testa@cnr.it

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Hybrid CNT-Hfo2, Zno and Ag based Nanocomposites for Optoelectronic and Photovoltaic Applications

Hybrid nanocomposites containing Carbon nanotubes (CNT) and inorganic nanoparticles produce new properties due to interfacial effectsabsent in the individual nanomaterials.ZnO is a well-known semiconductor. Conversely, HfO2is a wide bandgap dielectric.When reduced to nanoparticles with average sizes of 2.6nm, they emanate

in the blue-green part of the visible spectrum. This is attributed to surface defects generated due to size reduction, which in turn create luminescent defect states within the band gap of HfO2. In both cases, i.e. ZnO and HfO2, the oxygen vacancy related emission is between 2.3 and 2.5eV. Both materials also emit at approximately 3.3eV. In ZnO, the emission at 3.27eV corresponds to the near band edge emission(NBE), while as in HfO2 it corresponds to the Hf3+ defects states. When combined with CNT, changes in the emission spectra are observedproducing new phenomena. In the case of HfO2-CNT, both visible and UV photoexcitations are capable of producing a photocurrent at zero bias. This advocates its applicability as an active layer in photovoltaic cells. Depending on the photoexcitation, different defect states participate in the generation of photocurrents. Furthermore, Ag nanoparticles can act as nano-antennas owing to their plasmonic effect and the addition of Ag nanoparticles to ZnO-CNT demonstrates that the optical bandgap of the nanocomposites increases due to the Burnstein-Moss effect. Thus,conjoiningAg to ZnO-CNT not only enhances the UV emission but also suppresses the visible emission. For highly defective ZnO, addition of Ag nanoparticles allows visible light activation of ZnO-CNT-Ag nanohybrids. This talk will cover the synthesis and optical properties of the nanohy-brids. In addition, a modified common multimeter capable of measuring nanocurrents from HfO2-CNT will be briefly presented.Project EQUiTANT TK134 is acknowledged for financial support

BiographyProtima Rauwel, Senior Researcher.

Protima Rauwel earned her PhD from University of Caen, France in 2005,specializing in condensed matter physics and nanomateri-als. A postdoc at the University of Aveiro, Portugal, followed her PhD. She then moved on to the University of Oslo as a Researcher. Presently, she holds a Senior Researcher position at the Estonian University of Life Sciences, where she leads the project on ‘hybrid materials for photocurrent generation’. She has expertise in electron microscopy and spectroscopy, photoluminescence spectrosco-py, nanomaterials’ synthesis and assembly, opto-electrical measurements and device fabrication. She also participates in projects related to nanomedecine and nanofiltration. Her number of publications exceeds 80 including books, chapters, patents and critical book reviews. Her google scholar H-index is 26.

1Protima Rauwel, 2Augustinas Galeckas, 3Frédérique Ducroquet, 1Toivo Viidalepp, 1Alo Allik, 1Erwan Rauwel

1Institute of Technology, Estonian University of Life Sciences, Kreutzwaldi 52-1, 51014 Tartu, Estonia2Department of Physics, University of Oslo. P.O. Box 1048 Blindern, 0316 Oslo, Norway

3IMEP-LAHC, CNRS, Université de Grenoble-Alpes, Minatec campus, 38016 Grenoble, FranceEmail:protima.rauwel@emu.ee

Tel: +372 731 3301

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Regeneration of Catalytic Diesel Particulate Filters Coated with Nano-Sized Ceria

Catalytic (i.e., catalyst-coated) diesel particulate filters (DPFs) represent the best option for removing particulate matter, which is mostly composed of soot, from diesel engine exhaust. The main critical issue for regeneration of catalytic DPFs is the contact in the solid-solid reaction between soot and catalyst. In this work, the effect of

soot-catalyst contact on the regeneration performance of a DPF wash-coated with nano-sized ceria particles was investi-gated varying the amount of soot loaded inside the filter. Results of characterization and temperature-programmed com-bustion tests show that the soot-catalyst contact is maximized (and, thus, a truly catalytic regeneration occurs) when a high dispersion with a deep penetration of the catalyst into the macro-pores of the filter walls is achieved - in this respect, the nano-size of the catalyst particles plays a key role - and, at the same time, the accumulation of soot in the form of a cake layer on top of the walls is prevented through the choice of a suitably low soot load. Under such conditions, most of the soot is trapped inside the filter walls, coming into intimate contact with a well-dispersed catalyst. These results pave the way to a new operating mode for catalytic DPFs.

Key words: Catalytic Diesel Particulate Filters; Soot; Catalyst Dispersion; Soot-Catalyst Contact; Nano-Sized Ceria.

Biography of the Invited Speaker Valeria Di Sarli2003 Laurea degree summa cum laude in Chemical Engineering, University of Naples “Federico II” (UNINA) (IT).

2007 PhD degree in Chemical Engineering, UNINA.

2007 Visiting Researcher, Loughborough University (UK) (10 months).

2010-2019 Researcher, Institute for Research on Combustion, National Research Council of Italy (CNR-IRC).

Since 2019 Senior Researcher, CNR-IRC.

Research Interests:

Catalytic diesel particulate filters; Catalytic gasoline particulate filters; Design of novel catalytic and hybrid (homogeneous-hetero-geneous) micro-combustors; Chemical reactor engineering; Process safety.

Author or co-author of more than 170 works (since 2007): 5 (of which 4 invited) chapters of books printed by international publish-ing houses; 78 articles published in journals that are indexed by Web of Science/Scopus; 2 prefaces to special issues of an interna-tional refereed journal; more than 90 papers in national and international conference proceedings; 1 patent; 1 (invited) dissemination article on a national magazine.

1851 citations and H-index = 28 - data source: Scopus (June 2, 2020).

Valeria Di Sarli1*, Gianluca Landi1, Almerinda Di Benedetto2 and Luciana Lisi1

1Istituto di Ricerche sulla Combustione, Consiglio Nazionale delle Ricerche (CNR), Piazzale V. Tecchio 80, 80125, Napoli, Italy

2Dipartimento di Ingegneria Chimica, dei Materiali e della Produzione Industriale, Università degli Studi di Napoli Federico II, Piazzale V. Tecchio 80, 80125, Napoli, Italy

*E-mail id: valeria.disarli@cnr.it Phone No: +39 0817622673

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Protein chimeras for arsenic biosensing

Arsenic (As) is a toxic metalloid widespread in soil, water and air, harmful to humans and the environment; due to its toxicity, one of the biotechnological challenges is to develop biosensors for monitoring its concentration in the environment.

The arsenate reductase of Thermus thermophilus HB27 (TtArsC) is a thermoresistant enzyme capable of reducing As(V) to As(III) and therefore is a good candidate as sensing component of a biosensor [1], [2]. The use of miniaturized biosen-sors offers further advantages, such as the possibilityof performing the measurements in situ [3]. Moreover, biosensors based on self-assembling amyloid proteins show an improvement in sensitivity compared to other systems. For these reasons we aimed at developing a miniaturized biosensor which combines the recognition properties of TtArsC with the self-assembling properties of the hydrophobin Vmh2 of Plerotus ostreatus [4].

Here we describe the cloning and expression in Escherichia coliof two chimeric genes coding for two alternative fusion proteins, Vmh2-ArsC and ArsC-Vmh2. The recombinant chimeras, purified from inclusion bodies and characterized, possess arsenate reductase activity and can be efficiently immobilized on hydrophobic surfaces.

1. I. Del Giudice, D. Limauro, E. Pedone, S. Bartolucci, and G. Fiorentino Biochim. Biophys. Acta - Proteins Proteom-ics, vol. 1834, no. 10, pp. 2071–2079, 2013.

2. J. Politi, J. Spadavecchia, G. Fiorentino, I. Antonucci, and L. De Stefano J. R. Soc. Interface, vol. 13, no. 123, p. 20160629, 2016.

3. [3] M. Holzinger, A. Le Goff, and S. Cosnier, Front. Chem., 2014.

4. A. Piscitelli, A. Pennacchio, S. Longobardi, R. Velotta, and P. Giardina, Biotechnol. Bioeng., vol. 114, no. 1, pp. 46–52, 2017.

BiographyGabriella Fiorentino is associate Professor in Biochemistry at the Department of Biology, University of Naples Federico II; she works in the field of biochemical and molecular (micro-)biology and is mainly interestedin the structure-function-stability rela-tionship of proteins/enzymes from hyperthermophilic microorganisms. Most of her research is focused on characterization and regulation of the biochemical mechanisms responsible for response and detoxification to environmental stresses. This knowledge is applied in the development of nanobiosensors for the monitoring of environmental pollutants.

Rosanna Puopolo1, Patrizia Contursi1, Alessandra Piscitelli2, Paola Giardina2 and Gabriella Fiorentino1

1Dipartimento di Biologia, Università degli Studi di Napoli Federico II, Napoli, Italy2Dipartimento di Scienze Chimiche, Università degli Studi di Napoli Federico II, Napoli, Italy

Email: fiogabri@unina.itTel:+39081679167

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Mechanism of Synthesizing Nanocrystalline TiCrC Powders in Different Milling Atmospheres

Nanocrystalline TiCrC powders were produced by mechanical alloying (MA) from the mixture of titanium, chro-mium and graphite in vacuum and argon atmosphere, respectively. MA was carried out in a high-energy plane-tary ball mill Fritsch Pulverisette 7, at room temperature. The morphology and the phase transformation of the

powders were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The results showed that synthesizing mechanism and reaction velocity changed when Ti, Cr, and C mixture were milled in different atmo-spheres. It was found that nanocrystalline (Ti,Cr)C carbide were formed after 5 hours of milling in argon atmosphere and vacuum. However, the morphology and the phase transformations of the powder milled in argon atmosphere are similar to those obtained in vacuum.

Key words: Mechanical alloying; Nanostructure; Titanium carbide; X-ray diffraction; Powder; Microstructure.

BiographyDr. Mohsen Mhadhbi obtained his Ph.D degree from the Faculty of Sciences of Sfax, Sfax University, Tunisia. He is currently Assis-tant Professor of Chemistry in National Institute of Research and Physical-chemical Analysis, Tunisia. His research interests include nanomaterials and nanotechnology, material engineering and powder technology. Mhadhbi is the author and co-author of several books and research papers. Mhadhbi has presented almost thirty communications in national and international conferences. He also has vast experience in teaching, conducting research and supervising candidates. Mhadhbi is Editor Board Member and Reviewers of a number of international journals.

Research Interests: Nanomaterials and nanotechnology, Powder technology, Composites, Alloys, Carbides.

Mohsen MhadhbiLaboratory of Useful Materials, National Institute of Research and Physical-chemical Analysis, Tunisia

E: mohsen.mhadhbi@inrap.rnrt.tn T: (+216) 71 537 688

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Webinar on Nanotechnology June 15-17, 2020

(Day 3)

New Chiral Spin Filtering Materials for Sensing and Spintronics

I will discuss the physical mechanism for the Chirality Induced Spin Selective (CISS) effect and how it can be used to design nano-structured materials exhibiting large spin polarization power. I will specifically discuss our recent research with Metal Organic Frameworks (MOFs). These materials are almost perfect spin polarizers and the range

of spin polarization extends over hundreds of Angstroms, making them ideal for applications as sensors and spintronics components

BiographyVladimiro Mujica, Professor, School of Molecular Sciences, Arizona State University.

Prof. Mujica graduated from Central University in Venezuela and completed a PhD in Quantum Chemistry from Uppsala University. His area of research includes theoretical chemistry and nano-science, with special interests in spin-polarized electron transfer and electron transport.

Vladimiro MujicaArizona State University, School of Molecular Sciences, Tempe, AZ 85287, U.S.A

Ikerbasque Foundation and Donostia International Physics Center (DIPC), Manuel de Lardizabal Pasealekua 4, 20018 Donostia, Euskadi, Spain

Email: vmujica@asu.edu Tel: +1 480-727-8045

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Knowledge Gap and Challenges for NanotechnologyCharacterization: a Solution via Camera-less Terahertz 3DImaging and Spectroscopy

Terahertz spectroscopy and imaging adds a new frontier for very high sensitivity spectroscopy and camera-less, lattice resolution imaging, overcoming the Abbe’s diffraction limit. The Dendrimer Dipole Excitation (DDE) based terahertz time-domain spectroscopy offers the advent of very high sensitivity spectral analysis of nanoma-

terials including the zero-dimensional to three-dimensional materials. Since the T-ray penetrates almost all materials, this route also offers the advent of probing the inner structures of the samples including the volume imaging and lay-er-by-layer analysis. This paper focuses on the applications of this new and emerging technology for solving a number of critical problems in the semiconductor and nanotechnology world bridging the knowledge gap for three-dimensional interactions among and between the materials on nano to sub-Angstrom scale.

BiographyAnis Rahman, President and Chief Technology Officer.

Dr. Anis Rahman is an acclaimed scientist in the field of semiconductor and nanotechnology. He is a winner of many scientific awards including NASA Nanotech Brief’s “Nano-50” award twice; CLEO/Laser Focus World’s “Innovation award;” and “2015 MP Corrosion Innovation of the Year,” by the NACE. Anis is the founder of Applied Research & Photonics (ARP) a leading terahertz company located in Harrisburg, Pennsylvania (see http://arphotonics.net). He invented the “Dendrimer Dipole Excitation,” a new mechanism for high power terahertz generation. With this T-ray, ARP has demonstrated camera-less lattice resolution 3D imaging with sub-surface analysis of semiconductors and nanomaterials. Anis is a recognized scientific leader and member of scientific or-ganizations including the American Chemical Society (ACS) and The Optical Society of America (senior member). He is the chair of the optical metrology technical group of the OSA and the past chair of the Small Chemical Businesses Division of the ACS. Anis also received awards from the OMICS International keynote recognition, and Center for Dermal Research, Rutgers University.

Anis RahmanApplied Research & Photonics, Inc.

470 Friendship Road, Suite 10, Harrisburg, PA 17111, USAEmail:a.rahman@arphotonics.net

Tel: +1-717-623-8201

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Molybdenum Disulfide and Nitrogen-Doped Graphene Heterostructure for printed flexible

Fully inkjet-printed device fabrication is a crucial goal to enable large-area flexible electronics. Flexible electronics is appealing because of its low-cost but developing such systems is hindered by the difficulty in integrating high frequency electronic circuits on the flexible surface, especially the thin film transistors and switches.The limited

number of two-dimensional (2D) material inks, the bottom-gated structures, and the low current on/off ratio of thin-film transistors (TFTs) has impeded the practical applications of the printed 2D material TFTs. In the search for TFTs with high current ratios, we introduce a stable and efficient method of nitrogen-doped graphene (NDG) ink preparation for inkjet printing by liquid-phase exfoliation. The NDG thin film is print-stacked with molybdenum disulfide (MoS2) by multiple printing passes to construct a MoS2–NDG stack. We demonstrate top-gated fully inkjet-printed MoS2–NDG transistors with silver drain, source, and gate electrodes, and a barium titanate (BaTiO3) dielectric. A 100% inkjet-printed MoS2–NDG vertical 2D active heterostructure layer transistor with a current on/off ratio of 1200 is exhibited. The results may lead towards the development of all-printed 2D material-based transistor switches.

Key words: Flexible electronics, 3D printing; 2D material, graphene; molybdenum disulfide; transistor

BiographyDr. Maggie Chen received a Ph.D. degree in Electrical and Computer Engineering from the University of Texas at Austin in 2002. She is currently an Associate Professor in Electrical Engineering and core faculty for the Materials Science, Engineering and Com-mercialization Program at Texas State University. She has more than 95 publications in refereed journals and conferences. Dr. Chen secured more than $4M research funding in advanced electronics and photonics devices and systems. Her research was featured in USA Today Nov. 2016, and in Texas Monthly July 2016. Her printed electronics work was reported by NASA Tech Brief twice and was NASA Award recipient twice. She is a senior member of the IEEE, OSA, and SPIE since 2009. She is an associate editor of Optical Engineering journal since 2014. She was a conference committee member and session chair of the world’s largest photonics technologies event with 23,000 attendee, Photonics West 2019, 2020 and 2021.

Research Interests:

Her research interests include flexible electronics/photonics based on graphene, MOS2, carbon nanotube and other materials, inkjet and aerosol jet printing technologies, broadband antenna design, true-time delay feeding networks for phased-array antennas and system integration of phased-array antennas.

Maggie Yihong Chen, Ph.D.Ingram School of Engineering, Texas State University, San Marcos, 78666, Texas, USA

Mail id: Maggie.chen@txstate.edu, Phone No: 1-512-245-4158

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Enhancing CO2 Capture Capacity of Polytriazine Nanosheets by Metal Ion Coordination

High carbon dioxide (CO2) content in atmosphere is assumed to be one of the principal causes for global warming and associated climate change. Therefore, reduction of CO2 emissions from fossil fuel use through capture and storage is an outmost challenge for scientific community. Here we present a facile microwave condensation

technique for synthesizing nitrogen enriched polytriazine (NEPT) nanostructures capable of capturing CO2 at normal ambiental conditions. By incorporating transition and post-transition metal ions into the porous organic framework of polytriazine, its CO2 capture capacity could be improved substantially. The fabricated pristine NEPT and metal-coor-dinated NEPT nanostructures were characterized by transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), thermogravimetric analysis (TGA) and N2 adsorption-desorption at 77K. CO2 adsorption capacity of the nanostructures was estimated by recording their CO2 adsorption isotherms at room temperature. We demonstrate that the CO2 adsorption capacity of NEPT could be increased up to 50% by coordinating metal ions, without affect-ing their spontaneous adsorption-desorption characteristics.Isosteric heat of adsorption (Qst) of the nanostructures was estimated from their CO2adsorption isotherms recorded two different temperatures. Obtained results indicate the high CO2 adsorption capacity of metal ion coordinated NEPT nanostructures is the result of synergetic effects of metal ion coordination and higher CO2 bridging sites at their surface.

Acknowledgement: The work was supported by the Ministry of Science and ICT (Grant # 2016M1A2A2947942) and Brain Korea 21 Project 2015. U.P. acknowledges National Research Foundation (NRF, Korea Republic of) for the sup-port extended through Brain Pool program 2019.

BiographyDr. Umapada Pal is a Professor of materials science section of Institute of Physics, Autonomous University of Puebla, since 1995. Since last 25 years, Prof. Pal´s research group is involved in design, fabrication and application of nanomaterials of different kinds. Presently Prof. Pal´s group is involved in fabrication of plasmonic nanostructures for chemical and bio-sensing, nanocomposites for catalytic and photocatalytic applications, and magnetic nanostructures for biomedical applications.

Umapada Pal,1,2 Amol Uttam Pawar,2 Yong Soo Kang2

1Instituto de Física, Universidad Autónoma de Puebla, Apdo. Postal J-48, Puebla, 72570, Mexico.2Korea Center for Artificial Photosynthesis and Department of Chemistry, Sogang University, #1 Shin-

su-dong, Mapo-gu, Seoul 121-742, Republic of Korea.Email: upal@ifuap.buap.mx

Tel:+52-222-2295610

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Fertility Department’s Response and Experience to the Global Coronavirus (COVID-19) Pandemic

The laboratory completed the bench-to-bedside preclinical development of Tetraiodothyroacetic acid (tetrac) and tetrac nanoparticles (tetrac NP). Ttetrac blocks angiogenic and tumor cell proliferation actions of thyroid hor-mone initiated at the cell surface hormone receptor on integrin alphavbeta3. Tetrac also inhibits angiogenesis

initiated by vascular endothelial growth factor and basic fibroblast growth factor. Esterified and activated Tertrac have been demonsttated to be chemically conjugated to a terminal end group of modified poly(D,L-lactic-co-glycolic acid) [PLGA]. In order to do so PLGA was first formulated into microspheres by a single in-water emulsion technique, The loading efficiency was almost 100% due to the covalent linkage of the target drug to PLGA. Because the drug release rate from nicrospheres was expected to be dependent on the chemical degradation rate of PLGA chain, the conjugation approach was expected to be more suitable in order to get high drug payload and efficient passive targetting to solid tumors.

Acting via a cell surface receptor, tetrac and tetrac NP inhibited growth of h-MTC cells and associated angiogenesis in the chick chorioallantoic membrane (CAM) assay and mouse xenograft models. One of the challenges towards the clinical use of these biomacromolecules now lies in the selection of appropriate carriers to protect, deliver and release them in vivo to maximize their pharmacological effects.

Key words: Basic fibroblast growth factor; chorioallantoic membrane; medullary thyroid carcinoma; poly(lactic-co-gly-colicacid); quantitative real-time PCR; tetraiodothyroacetic acid; tetrac nanoparticle, vascular endothelial growth facto

BiographyAlexandre BRIDOUX received the grade of Doctor of the University of Lille II (Law & Health), France on November, 4th 2005. His speciality is Organic and Pharmaceutical Chemistry. He defended a thesis named « Design, synthesis and pharmacological valuation of gamma-carbolines, potential inhibitors of 5-lipoxygenase and cyclooxygenases ». Since then he worked in the Pharmaceutical Research Institute at Albany College of Pharmacy and Health Sciences as a Research Engineer in Pharmaceutical Chemistry with Dr. Shaker A. MOUSA as the Principal Investigator. He then moved to the University of New Orleans as Project Leader in Su-pramolecular Organic Chemistry for one year. He then moved back to France. He worked as an Assistant Professor in the field of Organometallic Chemistry at the Institut Lavoisier at Versailles (UMR CNRS 8180) and then in the field of natural product synthesis at the Institut Normand de Chimie Moléculaire, Médicinale et Macromoléculaire at Le Havre, Normandy (FR CNRS 3038). He’s collaborating with Professor Michel Meyer SAMAMA and Dr. Shaker A. MOUSA on several projects at the interface of Chemistry and Biology.

Research Interests: Pharmaceutical Chemistry.

Alexandre BridouxAlbany College of Pharmacy, The Pharmaceutical Research Institute (PRI), 1 Discovery Drive (Room 238),

Rensselaer, New York 12144, USAMail id: abridoux@wanadoo.fr

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Quantum dots for Energy and Environmental Applications

The synthesis via hydrothermal carbonization using 3² full factorial design were used for the to investigate the ef-fect of band gap energy (Eband gap) of the development and composition of carbon quantum dots (CQDs) from are biomass-derived materials chitin (CH), chitosan (CS), and graphite (G) mineral, these raw materials are low

cost, non-toxic and eco-friendly are promising for solar energy conversion and Environmental application with results in the quantum yield de 17,1%.BiographyMayara Gomes, Research Professor

Researcher in the area of Biomass in Renewable Energies linked to the Laboratory of Nanostructured Materials and Catalytic Reac-tors 2020. PhD in the Chemical Engineering (2019) at PPGEQ- UFRN of the Laboratory of Nanostructured Materials and Catalytic Reactors in the area of Chemical Processes and Environment and Energy. Master in Chemical Engineering (2010-2012) (PPGEQ- UFRN), in the area of utilization of industrial waste for use in civil construction with the cement laboratory (LABCIM-UFRN)/(NUPPRAR) and the Gas and Renewable Energy Technology Center (CTGÁS-ER). Graduated in Engineering (2004.2-2009.2) at the Federal University of Rio Grande do Norte (UFRN). Voluntary and Scientific Initiation Scholarship at the Oil and Gas Teaching and Research Center (NUPEG / ANP-PRH 14).

M. F. Gomes, Y. F. Gomes , Lopes-Moriyama and Carlson Pereira de Souza M. F. Gomesa, Lopes-Moriyamaa and Carlson Pereira de

SouzaaDepartment of Chemical Engineering, Federal University of Rio Grande do Norte, Av. Senador Salgado

Filho, 59078-900, Natal/RN, BrazilY. F. Gomesb, Department of Materials Engineering, Federal University of Rio Grande do Norte, 59078-

900, Natal/RN, BrazilEmail: mayaraeq_20@yahoo.com.br (M. F. Gomes)

Tel: +55-84-98817-0739

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Magnetic Nanoparticles(Magnetite) for Water and Wastewater Treatment

Magnetic nanoparticles (MNPs) have attracted interest on thefield of environmental remediation. Similarly, green chemistry has become a topic of interest in recent years because it is a convenient, safe, economic, and ecological way of synthesis. This work shows different sources for the synthesis of MNPs using plant extracts

or reduction with biomolecules, as well as the potential applications of these green nanomaterials in remediation tasks, elimination of pollutants from aqueous systems and as an antimicrobial agent. Likewise, the existing gap around the largescale application of these technologies is discussed. Finally, two cases are shown where magnetic nanoparticles were applied for water treatment. The first case, in the removal of mercury from mining tailings, and the second case in the food industry wastewater treatment for reuse in agricultural irrigation.

BiographyWilfredo Marimón-Bolívar, Associate professor - Catholic University of Colombia.

Chemical Engineer with doctorate studies in Engineering (Environmental nanotechnology). Research trajectory (10 years) in envi-ronmental nanotechnology, remediation in hydrosystems and water quality modelling. Technical leader of the Ministry of Environ-ment of Colombia for the creation of the action plan for the decontamination of the Atrato River (Chocó, Colombia) and Scientific Director of the Center for Research in GeoAgroAmbiental sciences CENIGAA.

Wilfredo Marimón-Bolívar1- Catholic University of Colombia, Research Group in Engineering for Sustainability - GRIIS

2- Geo-Agro-Environmental science Research Center- CENIGAAEmail:wmarimon@ucatolica.edu.co

Tel: +57-300-829-7875

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Applying Nanomaterials for Archiving and Nano-Positionin

Phase changes that alter some property, such as the resistivity, are usedto store data. We have investigated data stor-age using the decrease in magnetic permeability when amorphous ferromagnetic material, such as Metglas and FINEMET, crystallize. Low permeability bits are written by crystallizing small areas of amorphous films using

laser heating. Bits with different magnetic permeability are read by measuring their effect on a magnetic probe field. The advantages of this approach, called magnetic phase change memory (MPCM), are high density data storage and that the data will last more than 100 years. MPCM is ideal for archiving. A method of returning the bits to their amorphous state will be discussed. Another application of laser heating is nano-positioning. By employing laser heating and a near field transducer one can position one object relative to another object with an accuracy of 50 nm. This is done by using the laser and a near field transducer on one object to create a small hot spot on the second object. The hots spot on the second object is detected with a single metal thermocouple. The nano-positioning method can be applied to positioning electronic chips on wafers and to stack electronic chips.

BiographyWilfredo Marimón-Bolívar, Associate professor - Catholic University of Colombia.

Chemical Engineer with doctorate studies in Engineering (Environmental nanotechnology). Research trajectory (10 years) in envi-ronmental nanotechnology, remediation in hydrosystems and water quality modelling. Technical leader of the Ministry of Environ-ment of Colombia for the creation of the action plan for the decontamination of the Atrato River (Chocó, Colombia) and Scientific Director of the Center for Research in GeoAgroAmbiental sciences CENIGAA.

Alan S. EdelsteinTechLink

Characterization of the kinetics of metal oxidation at the nanoscale with advanced XPS analysis tools

The relevance of first-row transition metals in nanotechnology applications is growing rapidly. This raises the need of a technique capable of providing a detailed characterization of the physicochemical structure of nanostructures based on these metals. The appropriate technique is, par excellence, XPS. Their 2p core level is widely used in

XPS studies because those are the strongest transition available with Al Kα X-ray radiation and because their sharpness provides a distinctive signature of the chemical environment. The study of the spectra of those core levels is also of fundamental interest because they reveal interactions governed by angular momentum that give rise to rich structures that, in most cases, cannot be reproduced with current atomic physics theories.

We have developed state-of-the-art analysis tools that have allowed us to contribute into the elusive task of peak-fitting the 2p core level of the first-row transition metals. For example, we have characterized, for the first time, the composi-tion of the oxides that are formed when the clean metals are exposed to oxygen. The cases for Cr,Fe, Cu, and Zn will be discussed in detail.

Key words: Active background approach, correlated-SVSC background, oxidation early stages, shareparametershy-pothesis, simultaneous fitting method, slope background.

BiographyALBERTO HERRERA-GOMEZ is a Professor of Materials Science at CINVESTAV-Queretaro, Mexico. He obtained his Ph.D. in applied physics from Stanford University in 1994. Alberto spent two sabbaticals (2005-2007) at the University of Texas at Dallas and one sabbatical at the Universidad AutonomaMetropolitana in Mexico City (2012) where he was granted the Daniel Schechtman Chair. He received the Mexican National Award in Food Science in 2000 for work related to the analysis of free and bound water infrared data. Alberto was named Fellow of the AVS in 2016 “for his seminal contributions to developing quantitative surface anal-ysis, especially for XPS.” In 2019 he was granted the annual award of the Mexican Surface Society (SMCTSM) “for his pioneer work in XPS.” Alberto has published more than 80 papers in refereed international journals and directed the thesis work of 25 grad-uate students. He served as First Vice Chairman of the E42-ASTM Committee from 2011 to 2019 and as Chair of its Terminology Subcommittee since 2007. He was elected Secretary of the IUVSTA-Applied Surface Science Division in 2010. He was elected AVS-ASSD Member-at-Large from 2008 to 2011. He also served as President of the Mexican Vacuum Society, 2002-2004. Dr. Herrera-Gomez has chaired several international scientific meetings including the 47th IUVSTA Workshop on Angle-Resolved XPS (2007), the 5th IUVSTA School of Photovoltaic Materials and Devices (2003), and the XXIII (2003) and XXIV (2004) Conferences of the Mexican Vacuum Society. He served as the PacSurf 2018 Program Chair.

Research Interests: His primary research involves the structure, mass transport, and thermal stability of nanoscale films, and the development of quantitative analytical method for optimizing the quality and quantity of information extracted from XPS spectra. He is now engaged in synchrotron studies about the background signal in XPS data

Prof. Alberto Herrera-Gomez, Ph.DCinvestav-Unidad Queretaro, Mexico

Mail id: aherrerag@cinvestav.mxPhone No: +(52) 442 211 9904

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Subsurface characterization of Carbon nanotubes in nanocomposites

In this talk, I will discuss, the depth sensitivity and spatial resolution of subsurface imaging of polymer nanocompos-ites using second harmonic mapping in Kelvin Probe Force Microscopy (KPFM). The method allows the visualiza-tion of the clustering and percolation of buried Single Walled Carbon Nanotubes (SWCNTs) via capacitance gradient

(∂C/∂z) maps. Also, I will introduce a methodology that combines the generation of Multilayering samples and the ac-quisition of ∂C/∂z images of threedimensional percolating networks of SWCNTs at different depths in the same region of the simple for determining the depth detection limits of the AFM based electrical techniques. Computational trends of ∂C/∂zvs CNT depth correlate the sensitivity and depth resolution with field penetration and spreading, and enable a possible approach to three-dimensional subsurface structure reconstruction. The results open the door to nondestructive, 3D nano-metrology techniques for nanocomposite applications.

BiographyAlba Avila is an associate professor at Universidad de los Andes, Bogotá, Colombia. She holds a Ph.D. in Physics from the Uni-versity of Cambridge in the U.K., a Masters in Electrical Engineering and a B.A. in Physics and Electrical Engineering from the University of Los Andes. Her areas of expertise include electrical characterization of nanomaterials using microscopy techniques (AFM), nanocomposites synthesis and applications in energy conversion.

Reference paper: Depth-sensitive subsurface imaging of polymer nanocomposites using second harmonic Kelvin probe force mi-croscopy. OA Castañeda-Uribe, R Reifenberger, A Raman, A Avila. ACS nano 9 (3), 2938-2947.

A. AvilaAssociate Professor, Electrical and Electronic Department, Universidad de los Andes, Bogotá-Colombia.

Email: a-avila@uniandes.edu.co Tel: 5713394949

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Nanotech for Mitigating Disease and Extending the Human Lifespan

This talk addresses the need for a comprehensive strategy for protecting human biology. Can nanomedicine be our solution? Consider the concept of human evolution where the body endures over time as a sustainable system. This system simulates biology with technology to function as an adaptive process by organizing cells, molecules,

and machines to work in concert for regenerative purposes. The process of renewal, restoration, and growth within this biosystem is necessary for resilience to normal fluctuations within of biology and the environment. As such, it is only natural that the human body evolve to a state of renewal and restoration as a precaution to the imperilment of life. The future human body is not unlike or in conflict with the classical human form or the idea of the future posthuman. Because of its transitional stage, the body is a synergistic, symbolic interpretation of the form in which the ultimate value is to sustain life, no matter the substrate.

BiographyDr. Natasha Vita-More focuses on the ethical use of technology and evidence-based science for addressing the questions and con-cerns humanity faces. These include mitigating aging, healthy longevity, AI-human interfaces, robotics, nanotechnology and infor-mation tech. Her experience in the field of foresight studies establishes principles and practices for assessing humanity’s potential futures. Her proficiency as a professor of ethics has produced high-level scholarship toward understanding the challenges societies face. She guides exceptional understanding of scientific and technological advances across the fields of AI, nanotech, infotech and biotech industries that are shaping society. As a scientific researcher, she led a scientific breakthrough in the persistence of long-term memory of C. elegans. In education, she developed undergraduate and graduate Innovation Project, and facilitated pitches and com-petitions. For two consecutive years she presided as the onsite Judge for the WDCCDC Cybersecurity challenges. In innovation, she pioneered the first whole-body prosthetic prototype bringing together AI, nanomedicine, genetic engineering, IoT, and cyberspace of computing.

Social Media Website:

• Website: https://www.natashavita-more.com• Curriculum Vitea: https://natashavita-more.com/wp-content/uploads/2018/08/CV-2018.pdf• Blog: http://transhumanist.vip/• Twitter: https://twitter.com/natashavitamore?lang=en• LinkedIn: https://www.linkedin.com/in/dr-natasha-vita-more-phd-1st-380363/

Affiliations:• Professor Emeritus, University of Advancing Technology• Lead Science Researcher, Memory Project• Executive Director, Humanity+, Inc.• Scientific Board, Life Extension Advocacy Foundation

Dr. Natasha Vita-MoreProfessor Emeritus, University of Advancing Technology. USA

Webinar on Nanotechnology June 15-17, 2020

Accepted Abstracts

Synthesis and Applications of NanosizedSilica and Strontium Phosphosilicate Materialsfrom Hydrazide based HypercoordinateSilicon(IV) Complexes

Nanoparticles of rod shapedsilica and spherically shaped strontium phosphosilicate (Sr5(PO4)2SiO4) are syn-thesized through a versatile sol–gel combustion method from hydrazide based hypercoordinate silicon(IV) complexes derived from the reaction of silicon tetrachloride with the correspondingO-silylatedhydrazide de-

rivatives. For silica, a refined morphology was observed in the product after sintering i.e. from spherical to rod shaped-nanoparticles in the range of 70–120 nm after sintering at 1000 °C. All these complexes and the nano-materials were characterized by various spectroscopic and analytical techniques. This work also demonstrates the influence of na-no-sized silica particles on antibacterial activity (DIZ, MIC and MBC) i.e. better activity was shown for nano-rods derived from the hypercoordinate silicon complexes than the conventional TEOS (sol–gel) method.

BiographyDr. AkellaSivaramakrishna is currently a Professor of Department of Chemistry, School of Advanced Sciences at VIT in India. He is the recipient of Gold Medal at Master’s level and received his Ph.D. from Andhra University (2000) under the supervision of Prof. U. Muralikrishna. Then he worked as a postdoc with Prof. M.N. SudheendraRao (IITM,India), Prof. Daniel Kost (BGU, Israel), Prof. John Moss (UCT, South Africa), and Prof. F. Gordon A. Stone (Baylor University, USA). He has been associated with various research publications (135), andpatents (03). He is the recipient of ‘Best Teacher Award-2017’ by CKSKT Charity Trust-SVU, Tir-upati. His research interests include designing,synthesis, chemistry and applications of organometallic complexes,and development of new materials for water purification and chemical sensors.

Dr. AkellaSivaramakrishnaDepartment of Chemistry, School of Advanced Sciences, Vellore Institute of Technology (VIT), Vellore

632014, Tamil Nadu, IndiaEmail: asrkrishna@vit.ac.in

Tel: +91 8695880913

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Applications Of Nanotechnology in Health Care System

Nanotechnology is a promising field of interdisciplinary research. The potential uses and benefits of nanotech-nology are enormous. Nanotechnology is the technology of 21st century i.e. Nanotechnology is the science of the extremely small particles holds enormous potential for healthcare, from delivering drugs more effectively,

diagnosing diseases more rapidly and sensitively, and delivering vaccines via aerosols and patches. Nanotechnology is the science of materials at the molecular or subatomic level. It involves manipulation of particles smaller than 100 nanometres (one nanometre is one-billionth of a metre) and the technology involves developing materials or devices within that size is invisible to the human eye and often many hundred times thinner than the width of human hair. The physics and chemistry of materials are radically different when reduced to the nanoscale; they have different strengths, conductivity and reactivity, and exploiting this could revolutionise medicine. For example, a major challenge of modern medicine is that the body doesn’t absorb the entire drug dose given to a patient. Using nanotechnology, scientists can ensure drugs are delivered to specific areas in the body with greater precision, and the drugs can be formulated so that the active ingredient better permeates cell membranes, reducing the required dose . In this paper, an attempt is made to elaborate the major applications Nanotechnology in health care i.e. applications of Nanotechnology in medical fields.

Keywords: Nanotechnology, Medical Nanotechnology, Health Care, Nanotoxicity.

Akhilesh KumarDepartment of Physics, Govt. Girls College P.G. Rajajipuram, Lucknow, UP, India

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Acetone Sensor Made of Tin Dioxide Metal Oxide

Results of investigations of metal oxide chemical sensors for detection of acetone made of tin dioxide were dis-cussed in this review paper. There are several possibilities and technologies to manufacture of such sensors. Pure (without impurities) SnO2 and other metal oxide have low sensitivity to gases at its rather high pre-heating

(operation) temperature. Doping of tin dioxide with some metals or carbon nanotubes is one way of improving the sen-sitivity of such metal oxide sensors. Another way is the preparation of nanosensors.

V. M. AroutiounianYerevan State University Email: kisahar@ysu.am

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Application of Nanomedicine in Delivery of Phytoconstituents

Nanomedicine has been described as the utilization of nanomaterials for diagnosis, monitoring, control, preven-tion and treatment of diseases.Nanomedicine is the medical application of nanotechnology. Unique functional-ities can be added to nanomaterials by attaching specific biological molecules or entities to achieve active tar-

geting. Since the nanoscale size of these materials (~1-100nm) is similar to that of most biomolecules, nanomaterials or ‘nano-products’ can then be useful for both in vivo and in vitro pharmaceutical research and applications. Plant materials contain phytoconstituents with varied chemical structures and biological activities.These therapeutic plant components require specialized carrier systems to create similar vesicular entrapments that are observed in their natural states.The objectives of some studies on nanomedicines are to characterize the materials and investigate the efficacy of the prod-ucts. It has been observed that particle size, nature of materials and presence of targeting moieties influence the bio-fate and activity of nanomedicines. However, Quality by Design (QbD) should be used for optimization and biocompatibility should be established for safety.In conclusion, nanomedicines can be prepared using bioactive plant constituents and other functional materials for improved therapeutic efficacy.

Keywords: Nanomedicines; targeting; phytoconstituents.

BiographyDr. ChukwumaAgubata is a Senior lecturer in Department of Pharmaceutical Technology and Industrial Pharmacy, Faculty of Phar-maceutical Sciences, University of Nigeria Nsukka.

Dr. ChukwumaAgubatawas a joint-winner of the prestigious Nigeria Prize for Science 2017.DrAgubata is a Pharmacist by profes-sion with Ph.D in Pharmaceutical Technology and Industrial Pharmacy. He has published several articles in peer-reviewed journals and has a patent in drug delivery. Dr. Agubata is the Principal Investigator of Good Manufacturing Practice Research Group, a member of Pharmaceutical Society of Nigeria and the Editor-in-Chief of Journal of Pharmaceutical Development and Industrial Pharmacy. Dr. ChukwumaAgubata has research interests in nanomedicine and other advanced drug delivery systems especially those based on natural products and biomimicry.

Dr. AkellaSivaramakrishnaDepartment of Pharmaceutical Technology and Industrial Pharmacy

University of Nigeria NsukkaEmail: chukwuma.agubata@unn.edu.ng

Tel: +2348062404493

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Development of Silver Nanoparticle Incorporated Herbal Ointment

Background: Silver-based topical dressings are mostly used in the treatment of burns and open wounds. As the patho-genic organisms are getting resistant to existing medicines. Nowadays researchers are focussing on a novel drug deliv-ery system against this pathogen. Hence, the nanoparticle is much smaller than that of most of the pathogenic organisms so silver nanoparticles could have better antimicrobial activity. The purpose of the current research is to develop and evaluate the anti-microbial activity of the silver nanoparticle incorporated herbal ointments. Methods: Plant mediated eco-friendly method is used to synthesis the silver nanoparticle. The aqueous silver ions exposed to the aqueous extracts of Chromolaena odarata(CO) for the synthesis of silver nanoparticles. The green syn-thesized silver nanoparticles were further characterized by Fourier transform infrared spectroscopy (FT-IR), UV-visible spectroscopy (UV-vis), X-ray diffraction method(XRD), Field Emission Scanning Electron Microscope(FESEM) and Energy-dispersive X-ray spectroscopy(EDX) analysis and Zeta potential. The optimized green synthesized AgNPs were incorporated into two different ointment bases. The formulations were evaluated for various physicochemical studies such as color and odor, pH, extrudability, microbiological study, and stability analysis. The antimicrobial activity of the synthesized nanoparticles and the standard was analyzed using the disc diffusion method.Results: UV-vis spectrum revealed a narrow absorption band was observed at 415nm which is a characteristic of monodispersed silver nanoparticles. FT-IR spectral studies exhibit the presence of water-soluble compounds such as flavonoids, alkaloids, and polyphenols present in leaves which are involved in the reduction and capping of the AgNPs.The XRD and FESEM image showed relatively cuboidal shape nanoparticle formed with a diameter range from 40 nm to 100 nm. Analysis through the EDX spectrometer confirmed the presence of elemental silver signals of the silver nanoparticles. The physicochemical evaluation parameters of herbal ointment were found to be within the acceptable range. Synthesized nanoparticles incorporated ointment exhibited significant antimicrobial activity towards human two bacteria (E Coli and Staphylococcus epidermidis). Conclusion: The current study concluded that green synthesized silver nanoparticles incorporated herbal ointment have significant antimicrobial activity against different microorganisms such as both gram-negative and positive bacteria

Keywords: Silver nanoparticles, Chromolaena odarata , herbal ointment, Antimicrobial activity.Research interest: Nanoparticulated drug delivery system, Microspheres ,Herbal Nanotechnology etc.

BiographyDr.Deepa M K. is an Associate Professor of Pharmaceutics at Ashokrao Mane College of Pharmacy, Kolhapur,Maharashtra. She obtained her B.Pharmacy from The Tamil Nadu Dr.MGR Medical University, Chennai, Tamil Nadu and M. Pharmacy from SRM deemed University, Chennai. Tamilnadu. Ph.D in Pharmaceutics from Singhania University, Rajasthan. She has 13 years of teach-ing and research experience. She has guided B.Pharm and M.Pharm students. Her area of interest is nanoparticulated drug delivery for colorectal cancer, development silver nanoparticle, floating drug delivery system, microencapsulated drug delivery system and Solid lipid nano particlulated drug delivery system. She has published 30 research and review articles in national and international journals. She has presented papers in various national conferences.

Dr. AkellaSivaramakrishnaDepartment of Chemistry, School of Advanced Sciences, Vellore Institute of Technology (VIT), Vellore

632014, Tamil Nadu, IndiaEmail: asrkrishna@vit.ac.in

Tel: +91 8695880913

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Plasmonic Au-ZnOheterojunctionphotocatalysts

Plasmonic Au-ZnO composite photocatalysthas garneredsignificant interest in the degradation of many organic pollutants both in aqueous and gaseous phase because of the contribution from each component and to the syner-gistic intra-particle interactions at the interface of integrated components. The deposition of Au metallic islands

induces the visible light response through surface plasmon resonance effect and promotes the charge carrier separation directly related to the heterojunction formation. Thepreference of Au compared to noble metals, preparative method and structural configuration of Au-ZnO, and morphology induced reactivity uncovers the unique charge carrier dynamics and photocatalytic reaction pathways associated with Au-ZnO. The ternary structures of Au-ZnOthat includes coupling with metals, carbon materials and wide/narrow gap semiconductors provides a ray of hope for developing multifunc-tional Au-ZnO based photocatalysts.

Keywords: Au-ZnO; Preparative methods; Morphological effects; Charge carrier dynamics; Photocatalysis.

S. Girish KumarDepartment of Chemistry, School of Engineering and Technology, CMR University,

Bangalore-562149, KARNATAKA, INDIA. E-mail: girichem@yahoo.co.in

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Nano-Engineered Glass-Based Optical Fiber for Photonics Applications

Now-a-days an interesting research area being attempted across the globe to develop optoelectronic devices based on rare earth doped nano-structured materials based optical fibers for photonics application such as a broadband light source, optical amplifier and high power fiber lasers with low photo-darkening phenomena.

These nanoparticles dispersed in a silica matrix based optical fibers show large non-linear optical properties and offer a great potential for optical amplification, lasing as the rare earth ions doping concentration can be higher than in an amorphous medium.

In my invited talk, describe the Er-doped nano-engineered Scandium-Phospho-Yttria-Alumina-Silica (SPYAS) glass-based optical fiber for use as a broad-band optical amplifier. Such new class of EDF made applying the concepts of phase-separation and crystal growth phenomena through modified chemical vapour deposition (MCVD) process with solution doping technique, followed by a suitable thermal annealing of sourcing preform. The TEM images along with ED, EDX and XPS studies on the Er doped nano-engineered fibers confirm the formation of scandium yttria rich phase-separated crystalline nano-particles having sizes 8-12 nm. We also present the optical and spectroscopic proper-ties of such kind of Er doped nano-engineered SPYAS glass based optical fibers for study of their amplification charac-terizations showing better optical amplification performances compared to standard Sc free EDF. We have achieved a flat-gain spectrum about 38.675 dB with variations of less than ±0.70 dB over the whole range spanning 1530 to 1590 nm. The results suggest that such kind of Er doped nano-engineered fiber based amplifiers are expected to be useful in broadband optical communication systems. My talk also describes the development of Multielement (ME) nano-phase separated silica-glass based optical fiber. The lasing and photodarkening behavior of this ME fiber have been demon-strated and compared with standard Yb-doped fiber of phospho-alumina silica glass composition, which clearly reveals that ME-Yb doped fiber is a promising candidate for high power laser application with enhanced PD resistivity.

BiographyDr. Mukul Chandra Paul obtained his PhD degree in Fiber Optics from the Jadavpur University in 2003. At present he is working as a senior principal scientist at the Fiber Optics and Photonics Division, CSIR-Central Glass & Ceramic Research Institute, Jadavpur, Kolkata-32 (INDIA) . His research work deeply focused on RE doped nano-engineered glass based specialty optical fibers for pho-tonics applications. Dr. Paul received a number of prestigious awards / recognitions such as BOYSCAST Fellowship from DST (2005), CSIR Technology Award (2012), DST-UKIERI Award (2013), CSIR Technology Award for Innovation (2015), Indo-Rus-sian (RFBR) Collaborative Research Grant-2016, Indo-Portugal (FCT) Collaborative Research Grant-2017 etc. He has published more than 250 papers in SCI journals and Conferences, 7 Book chapters and edited two books on Fiber Laser. He holds 7 US patents and filed 4 Indian patents. He is involved to several collaborative projects with different countries such as UK, Russia, Portugal, Mexico, Malaysia, etc.

Dr. Mukul Chandra PaulSenior Principal Scientist, Fiber Optics and Photonics Division, CCSIR-Central Glass and Ceramic Research

Institute, Jadavpur, Kolkata-32, Email: mcpal@cgcri.res.in, Tel: 033-2322 3285

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Colorimetric Mechanical Sensors based on Polymer/Particle

The development of colorimetric mechanical sensors such as force, pressure, strain, and impact one allows visu-alization of any current structural deformation of a material system that exists through naked eyes after a me-chanical operation. The integration of mechanochromic materials with polymers allows for tailor-made design

of these mechanical sensors.The preference of polymers as matrices gives the structure flexibility, and therefore can tolerate a wide range of forces. In this study, color properties of materials were investigated to measure the level of me-chanical forces applied.Colorimetric responses of polymer composites were investigated in different sections according to the triboluminescence, photoluminescence, scattering or plasmon resonance properties of the materials. The optical response of resulting colorimetric composite films was examined in terms of the application of impact, lateral strain and pressure. According to recent developments in literature, colorimetric polymer composites that are sensitive to various mechanical stimuli have been described in many aspects depending on their working ranges and the mechanochromic materials embedded within.

BiographyMustafa M. Demir is Professor at the Izmir Institute of Technology, Department of Materials Science and Engineering. He coordi-nates an interdisciplinary group working on synthesis and nanotechnologies on soft matter. His research activity is focused on the development of polymeric optical nanocomposites for advanced applications, electrospinning, and functional systems. He has been awarded the “Young researcher” Prize of Turkish Academy of Sciences in 2013. His details can be found at: http://www.demirlab.iyte.edu.tr

EzgiInci,aGokhanTopcu, bTugrulGuner, cMerveDemirkurt,d Mus-tafa M. Demir a

Ezgi İNCİ, Department of Materials Science and Engineering, İzmir Institute of Technology, 35430, Gül-bahçe, Urla, İzmir, Turkey

GokhanTopcu, Chemistry Department, Koç University, 34450, Sarıyer, İstanbul, TurkeyTugrulGuner, Centre Energie, Matériaux et Télécommunications, Institut National de la Recherche Scien-

tifique (INRS), Montreal, QC J3X 1S2, Canada.MerveDemirkurt, KanatPaints&Coatings, Kemalpaşa OSB 321, İzmir, Turkeys.

Mustafa M. Demir, , Department of Materials Science and Engineering, İzmir Institute of Technology, 35430, Gülbahçe, Urla, İzmir, Turkey

Email: mdemir@iyte.edu.trTel: +90 232 750 7511

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Impact of nano-zinc-oxide as an alternative source of zinc in date palm in vitro cultures

Nanotechnology is a rapidly applied field to be used in agriculture. From all kinds of nanoparticles zinc had a great interest in investigations due to its importance for plant as it involved in many important growth process-es. Presently, rare literature is available about nanoparticles effects on date palm in vitro propagation, especially

zinc oxide nanoparticles (ZnO NPs). Therefore, ZnO NPs were used in this investigation to study their effect on dif-ferent stages of date palm somatic embryo protocol; instead of zinc sulfate (ZnSo4) in Morashige and Skooge medium (8.9 mg/L) with lower concentrations (0.2, 0.1, 0.05 and 0.025 mg/L). Generally, results showed that ZnO NPs showed superior values compared with ZnSo4 as a control treatment at all stages of date palm tissue culture protocol. Lower concentrations of ZnO NPs (0.05 and 0.025 mg/L) gave better values compared with higher concentrations (0.2 and 0.1 mg/L) in callus growth, globularizaton, embryo formation number, secondary embryo number, shoot length. Whereas, higher shoot number was shown at the highest concentrations as well as rooted plantlet length. As we know it’s the first investigation of ZnO NPs in date palm in vitro culture.

Keywords: Nanoparticles, zinc oxide, Phoenix dactylifera, somatic embryogenesis.

BiographyRania Abdel-Ghaffar Taha is a professor at National Research Centre, Egypt. She is an expert in plant tissue culture. She supervised several MA and PhD theses. She received two scientific awards, namely: Best PhD Thesis 2010 and Scientific Encouragement Award 2014 presented by the National Research Center. She has published and presented many research articles and scientific books in tissue culture and nanotechnology application of in vitro culture of date palm, jojoba, pineapple, olive, banana, goji and fig. She was a principle investigator for an in-house funded project, Co-PI for another in NRC and a member in STDF funded project and many NRC projects. She has an experience in plant biotechnology, micropropagation of biofuel plants, tissue culture of fruit and ornamental plants, plant breeding by modern techniques. She established the “Tissue Culture Technique Lab”, Agricultural and Biological Division, Central Laboratories Network, NRC, and is a member from 2015 till present. She is an associate editor at “Advances in Plant and Agriculture Research Journal”, MedCrave publisher (ISSN: 2373-6402APAR) from 2015 to present and a reviewer at “American Journal of Plant Science”. She was a visiting associate professor in 2015 at Universiti Kabangsaan Malaysia in Department of Chemical and Process Engineering, Faculty of Engineering and Built Environment, Universiti Kabangsaan Malay-sia helping students to do research on plant tissue culture. Dr. Rania’s page is: http://orcid.org/0000-0003-1163-0406.

Research Interests:

Nanotechnology application on plantsPlant tissue culturePlant breeding by modern techniquesSalinity and drought tolerance

Rania A. TahaBiotechnology and Micropropagation Lab., Pomology Dep. and Tissue Culture Technique Lab., Central

Laboratories Network, National Research Centre, Giza, Egypt.Mail id: rania_abdelghaffar@yahoo.com, ra.taha@nrc.sci.eg Phone No: +201224184078

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Unveiling New Cathode for High Power Li-ion Battery Systems

Development of high-power and high-energy lithium-ion batteries with the front-running layered nickel-rich cath-ode and efficient electronic control for electronic/automotive applications could be commercially viable. In ad-dition to the design and development of better electronic control for the battery system, the inherent degradation

issues of nickel-rich materials such as inter/intra-granular microcracks and phase transitions at the microparticle-level during cycling at harsh conditions need to be alleviated. Herein this work, the structurally-stable hollow-structured nick-el-rich material has been developed using the affordable, scalable, and one-pot co-precipitation method without using surfactants/etching agents/complex-ion forming agents. Such a strategically developed cathode viaKirkendall effect, exhibited excellent full-cell high rate capability, cycle life, and structural stability even at the industrial specifications (electrode loading, ~11.0 mg cm-2 and density, ~3.0 g cm-3), owing to the exceptional properties of excellent surface permeability and associated fast Li-ion diffusion, and well-defined internal voids in hollow-structure will act as ‘buffer zones’ for electromechanical-stress relief during cycling. This modified synthesis strategy could be viable for industries in the preparation of high-performance hollow-structured cathodes at one-pot for high-rate lithium-ion cells. After the successful preparation of battery electronic materials and the in-house built prototyped lithium battery system (consist-ing of series/parallel connected pouch-type individual cells), it is proposed to perform advanced electronic analyses on the preliminary lithium-ion cells using custom developed in-situGalvanostatic Intermittent Titration Technique (GITT). In the further stages, the battery’s state of charge (SoC) will be estimated using the SoC algorithm developed based on the battery characteristics (true capacity, open circuit voltage (OCV) etc.).

BiographySujith Kalluri, Assistant Professor.

Dr. Sujith Kalluri is working as Asst. Professor at School of Engineering and Applied Sciences, SRM University-AP, India, with research expertise in application-oriented rechargeable energy storage devices. He has graduated with PhDfrom University of Wol-longong, Australia and successively worked as Post-doctoral Research Associate at UNIST, South Korea. In the past, he has worked with pioneer battery researchers Prof. Jaephil Cho (UNIST, South Korea) and Distinguished Prof. Zaiping Guo (University of Wol-longong, Australia). During then, he has designed and developed various electronic testing protocols for rechargeable lithium-ion and beyond-lithium-ion technologies by targeting specific applications such as fast-charging, high-voltage, and long cycle-life. The outcomes have been published in reputed international journals and currently under the industrial testing stage for practical appli-cations.

Sujith KalluriDepartment of Electronics and Communication Engineering, School of Engineering and Applied Sciences,

SRM University-AP, Andhra Pradesh, 522502, India. Email: sujith.k@srmap.edu.in

Tel: +919989856601

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Multifunctional Nanoparticles Design by Gas-phase Synthesis for Advanced Applications

Gas-phase synthesis is a bottom-up approach for production of nanoparticles from individual atoms or molecules. Especially magnetron-sputter inert-gas condensation offers plentiful possibilities for facile design of nanoparti-cles compared to chemical synthesis methods because of fast kinetics and non-equilibrium growth. Control over

deposition parameters such as magnetron power, aggregation zone length, and inert gas pressure, in combination with in-situ mass filtration allow growth of size-selected nanoparticles with high accuracy. Due to flexible growth conditions, the production of multi-component nanoparticles, such as multi-core/shell structures in which the cores present either “dumbbell-like” or “onion-like” structures can be realized for targeted applications. In this talk I will discuss the for-mation of nanoparticles for various applications (magnetic, plasmonic, catalytic, hydrogen storage, Li-ion battery, and gas-sensing), and emphasis will be given how these properties primary depend upon multistage of magnetron-sputter process.

BiographyDr. Vidyadhar Singh, Assistant Professor

Dr. Vidyadhar Singh is an Assistant Professor of Physics Department at Jai Prakash University (Public State University), India. He received his Ph.D. in Physics in May 2011 from the Indian Institute of Technology (IIT), Kharagpur, India. Earlier he was a Post-doctoral Scholar of Nanoparticles Design Unit at Okinawa Institute of Science and Technology at Japan for 6 years from 2012 to 2017. He has published more than 50 articles in refereed journals and 01 invited chapter in book. He has presented 40 invited talk/oral/posters in international/national conferences. He has received jointly 04 US patents. His present research focuses on design and synthesis of inorganic nanostructural materials by gas-phase condensation method, and their application.

Vidyadhar SinghDepartment of Physics, Jai Prakash University, Chapra-Bihar-841302-India

Email:vsraj47@gmail.com

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Bonding of Carbon Nano Tube to Metal Electrode by Using Ultrasonic Spot Nanoweld

In this paper, an ultrasonic nanowelding has been successfully used to be more reliable and applicable process in bonding between single-wall carbon nanotubes (SWCNTs) and metal electrodes. The process is carried out through pressing of SWCNTs against electrodes ultrasonically under the perfect influence of vibrating amplitude and clamp-

ing force. The crated forming area of the joint by the effect of ultrasonic nanoweld have been demonstrated to be robust in mechanical properties, with low resistance varied from 9 – 16 k for vibration amplitude long metallic up to 1 μm of SWCNT at room temperature. By using the ultrasonic technique, a significant stability with lower value of Ohmic contact between SWCNTs and metal electrodes was achieved. Also, the welding zone of the joint parts become more reliable and consistency, low value in contact resistance is identified, enhancement of long-term stability and strong tensile strength.

Keywords: ultrasonic spot Nanoweld, bonding technique, welding zone, contact resistance.

Ziad Shakeeb Al Sarraf1*and Anas Obeed Balod2

1,2Department of Mechanical Engineering, Faculty of Engineering, University of Mosul, Mosul, IRAQ

*ziadalsarraf@uomosul.edu.iq

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