Second National Conference on Thin Film Science and ... · PDF fileSecond National Conference on Thin Film Science and Nanotechnology (SECOND NCTFSANT ... and Nanotechnology (SECOND

Second National Conference on Thin Film Science and Nanotechnology (SECOND NCTFSANT) March 2-3, 2015 RSGC Thanjavur – 613 005.


CONTENTS

Foreword

Preface

1. OPUNTIA STRICTA FRUIT AS A NOVEL NATURAL DYE MATERIAL FOR

DYE SENSITIZED SOLAR CELL (DSSC) APPLICATIONS

Dr.S.SAKTHIVEL* and V.BASKARAN

2. SYNTHESIS, MOLECULAR STRUCTURE, SPECTROSCOPIC

CHARACTERIZATION AND QUANTUM CHEMICAL CALCULATION

STUDIES OF 2-(2-BROMOETHYL)-1H-ISOINDOLE-1, 3(2H)-DIONE

K. GOVINDARASU AND E. KAVITHA

3. FABRICATION OF HETEROJUNCTION LEAD SULFIDE QUANTUM DOT

SOLAR CELLS (QDSSC) BY THIN FILM TECHNIQUES


4. TIGHT FOCUSING PROPERTIES OF AZIMUTHALLY POLARIZED

HOLLOW GAUSSIAN BEAM THROUGH A DIELECTRIC INTERFACE

M UDHAYAKUMARA, M LAVANYAB, J.WILLIAM CHARLES., K.B. RAJESHA*

5. SEM-EDX STUDIES ON CALCIUM PHOSPHATE TYPE OF URINARY STONE

Dr. R. SELVARAJU*& S.SULOCHANA**

6. GROWTH OF THIN FILM NANOSTRUCTURES AND LEAD SULPHIDE

QUANTUM DOTS FOR HYBRID HETEROJUNCTION SOLAR CELLS

Dr.S. SAKTHIVEL * and V. BASKARAN

7. CHARACTERIZATION OF HIGHLY TRANSPARENT ZnO THIN FILMS

PREPARED BY THERMAL EVAPORATION TECHNIQUE

N.H.SHEEBA.1, P.V.SREENIVASAN2 AND RACHEL REENA PHILIP1*


8. COMMERCIAL GRADE FLUORINE DOPED TIN OXIDE (FTO)

TRANSPARENT FILMS PREPARED BY THERMAL EVAPORATION

Dr.S.SAKTHIVEL*, G.KARTHIKEYAN and V.BASKARAN

9. CHARACTERISATION STUDY OF ELECTRICALLY CONDUCTIVE PANI

COATED TEXTILE FABRICS AND ITS APPLICATION OF EMI SHIELDING

DR.S.SAKTHIVEL* and A.BOOPATHI

10. ROLE OF ELECTRON-PHONON INTERACTION IN MAGNETIC POLARON

MODEL OF EUB6

JAYITA CHATTOPADHYAY

11. THERMALLY VACUUM EVAPORATED Cu/SnS/ZnO THIN FILMS FOR

PHOTOVOLTAIC APPLICATIONS


12. STRUCTURAL AND OPTICAL PROPERTIES OF METAL OXIDE DOPED ZnO

THIN FILMS BY THERMAL EVAPORATION


13. SYNTHESIS AND CHARACTERIZATION OF Sn DOPED ZnO

NANOPARTICLES BY PRECIPITATION METHOD


14. NANOCOMPOSITES POLYTHIOPHENE/ZINC OXIDE THIN FILM

AND STUDY OF CHARACTERISATIONS

DR.S.SAKTHIVEL* and A.BOOPATHI

15. STRUCTURAL AND ELECTRICAL PROPERTIES OF ZnO FLOWER-LIKE

STRUCTURES

SUGAPRIYA, S.a, LAKSHMI, S.a, SENTHIL KUMARAN, C. K.b*, MANIVANNAN Nb

and CHANDAR SHEKAR Bb*

16. PERFORMANCE OF QUANTUM DOT SENSITIZED SOLAR CELLS BASED

ON COLLOIDAL PbS: In/CdS QUANTUM DOTS



17. PHASE CHANGE ON TiO2 NANOPARTICLES BY ANNEALING

SUGAPRIYA, S.a*, LAKSHMI, S.a, SENTHIL KUMARAN, C. K.b*,

MANIVANNAN Nb and CHANDAR SHEKAR Bb

18. SYNTHESIS AND CHARACTERIZATION ANALYSIS OF ZNS: MN2+ NANO

PARTICLES

BALACHANDRAMOHAN.M AND GANESHAMURTHY.G

19. SYNTHESIS AND CHARACTERIZATION OF CADMIUM SULFIDE (CdS)

QUANTUM DOTS (QDS) FOR QUANTUM DOT SENSITIZED SOLAR CELL

APPLICATIONS


20. EFFECT ON THE GROWTH PERFORMANCE OF BROILER CHICKENS BY

SELENIUM NANOPARTICLES SUPPLEMENTATION

SENTHIL KUMARAN C K1*, SUGAPRIYA S2, MANIVANNAN N1 AND CHANDAR

SHEKAR B1*

21. QUANTUM SIZE EFFECT ON THE OPTICAL AND ELECTRONIC OF CdSe QD Dr.S.SAKTHIVEL* and V.BASKARAN

22. SYNTHESIS AND CHARACTERIZATION OF FE3O4 NANOPARTICLES

BY CHEMICAL PRECIPITATION METHOD.

J.VIJAYAPRIYA1, M.ANBARASU2 AND K.PARASURAMAN1*

23. SYNTHESIS AND CHARACTERIZATION OF NIFE2O4 NANOPARTICLES

BY CHEMICAL CO-PRECIPITATION METHOD

S.JAMES JAYASEELAN1, M.ANBARASU2 AND K.PARASURAMAN3

24. SYNTHESIS OF MONODISPERSE In DOPED ZnO NANOCRYSTALS


25. COMPARISON STUDY OF CZTS THIN FILMS GROWN USING VACUUM

AND SOLUTION BASED METHODS


26. SYNTHESIS AND STRUCTURAL DETERMINATION OF Fe3O4

NANOPARTICLES BY HYDROTHERMAL ROUTE.

T.Saranya1, M.Anbarasu2 and K.Parasuraman1*

27. SYNTHESIS AND CHARACTERIZATION OF NiFe2O4 NANOPARTICLES

BY HYDROTHERMAL METHOD.

P.Samiyammal1, M.Anbarasu2 and K.Parasuraman3*


28. GREEN APPROACH FOR PURIFICATION AND HYDROTHERMAL SYNTHESIS

OF TIN SULFIDE NANOPARTICLES FROM WASTE WATER


29. STRUCTURAL ANALYSIS OF CoFe2O4 NANOPARTICLES BY CHEMICAL

CO-PRECIPITATION METHOD.

S.SATHIYA1, M.ANBARASU2 AND K.PARASURAMAN1*

30. PREPARATION AND CHARACTERIZATION CoFe2O4 NANOPARTICLES


M. GURUMOORTHY1, M.ANBARASU2 AND K.PARASURAMAN1*

31. INVESTIGATION OF THE OPEN-CIRCUIT VOLTAGE IN NANOSTRUCTURED

TITANIA FILMS SENSITIZED SnS QUANTUM DOT SOLAR CELLS


32. FT-IR, XRD AND SEM STUDY OF MnFe2O4 NANOPARTICLES BY CHEMICAL

CO-PRECIPITATION METHOD.

M. GURUMOORTHY1, M.ANBARASU2 AND K.PARASURAMAN1

33. SYNTHESIS AND CHARACTERIZATION OF MFe2O4 NANOPARTICLES


M. GURUMOORTHY1, M.ANBARASU2 AND K.PARASURAMAN1*

34. GREEN SYNTHESIS OF QUATERNARY NANOCRYSTALLINE Cu2ZnSnS4

POWDER USING HYDROTHERMAL METHOD


35. PREPARATION AND CHARACTERISATION OF CONJUGATED POLYMER

POLYANILINE AND ZINC OXIDE NANOCOMPOSITES THIN FILM

DR.S.SAKTHIVEL* AND A.BOOPATHI

36. PREPARATION OF NANOCOMPOSITES POLYPYRROLE AND ZINC OXIDE

THIN FILM CHARACTERISATION AND APPLICATION OF HUMIDITY

SENSOR



37. FABRICATION AND CHARACTERIZATION OF COPPER ZINC TIN SULFIDE

AS A SUPERIOR COUNTER ELECTRODES PREPARED BY DROP COATING

METHOD FOR DYE SENSITIZED SOLAR CELL (DSSC) APPLICATIONS


38. PREPARATION AND INVESTIGATION OF PZT-PVDF COMPOSITES OF 0-3

CONNECTIVITY

P. GOWDHAMAN1*, K. ANTONY RAJ1 AND V. ANNAMALAI2**

39. PREPARATION AND CHARACTERISATION OF ELECTRICALLY

CONDUCTIVE POLYPYRROLE COATED TEXTILE FABRICS AND ITS

APPLICATION OF STRAIN SENSOR


40. SPECTROSCOPIC AND THEORETICAL INVESTIGATIONS ON VILDAGLIPTIN

R. SOLAICHAMY., J. KARPAGAM

41. DEVICE MODELING AND THICKNESS SIMULATION OF CZTS THIN FILM

SOLAR CELL USING SCAPS


42. CHARACTERISATION OF TRUNCATED OCTAHEDRAL CERIA

NANOPARTICLES ACHIEVED VIA SURFACTANT ASSISTED ROUTE

RENUKA N. KA.*, PRAVEEN A. K. A, DIVYA T. A, ANAS K.B

43. SYNTHESIS CHARACTERIZATION AND DIELECTRIC STUDIES OF

MORPHOLOGICALLY CONTROLLED CERIA NANOSTRUCTURES

DIVYA T. and RENUKA N. K.*

44. DEVICE MODELING AND SIMULATION OF CIGS THIN FILM SOLAR CELL

USING SILVACO ATLAS


45. PHYTOSYNTHESIS OF SILVERNANO PARTICLESIN CRUDE LATEX

EXTRACTS OF CALOTROPISPROCERAL, PERGULARIADAEMIAL,

ANDSARCOSTEMMAINTERMEDIUMDECNE.

Dr.T.Malarvili *, B.Ramya2 , and S.Vijikumar3

46. THE EFFECT OF DOPANT CONCENTRATION ON TRANSPARENT

CONDUCTING AL-DOPED ZNO THINFILMS FOR EFFICIENT Cu2ZnSnS4

THIN-FILM SOLAR CELLS PREPARED BY VACUUM EVAPORATION METHOD



47. SYNTHESIS AND CHARACTERIZATION OF LEAD SULFIDE (PbS) THIN FILMS

BY CHEMICAL BATH DEPOSITION (CBD) METHOD.

Dr.S.SAKTHIVEL*, S.ANJALI and V.BASKARAN

48.EFFICACY OF ZIRCONIUM NANOPARTICLES AGAINST METALLO BETA-

LACTAMASE AND BIOFILM PRODUCING PSEUDOMONAS AERUGINOSA

S.RAJASEKAR, AND A.MOHANKUMAR*,

49. PREPARATION OF TiO2/CdS/CdSe/ZnS FILMS FOR QUANTUM DOT

SENSITIZED SOLAR CELL BY SILAR METHOD


50. SOLUBILITY IMPROVEMENT OF SIMVASTATIN USING NATURAL

POLYMER BY NANOTECHNIQUE

M. MANGALAM, N. PUNITHA, K.VIJAYALAKSHMI

51. MODIFIED NATURAL CARRIER IN SOLID DISPERSION FOR THE

SOLUBILITY ENHANCEMENT OF ROSUVASTATIN CALCIUM BY

NANOTECHNIQUE

K.VIJAYALAKSHMI , N. PUNITHA, M. MANGALAM

52. FLEXIBLE SUPERCAPACITORS BASED ON PAPERS COATED WITH CARBON

NANOTUBES


53. NANOSIZED TECHNOLOGICAL APPROACHES FOR THE DELIVERY OF

POORLY WATER SOLUBLE ROSUVASTATIN CALCIUM

K.VIJAYALAKSHMI M. MANGALAM, N. PUNITHA

54. CHEMICAL BATH DEPOSITED ZnS THIN FILMS WINDOW LAYER FOR

PHOTOVOLTAIC APPLICATION


55.COMMERCIAL GRADE TRANSPARENT INDIUM TIN OXIDE FILMS PREPARED

BY THERMAL EVAPORATION


56. SOLUBILITY AND DISSOLUTION ENHANCEMENT OF SIMVASTATIN USING

GLUCOSE AND GALACTOSE AS HYDROPHILLIC CARRIER

M. MANGALAM, N. PUNITHA, K.VIJAYALAKSHMI

57. FABRICATION OF HYBRID CdTe: CdSe BULK HETEROJUNCTION SOLAR

CELLS



58. PREPARATION AND CHARACTERIZATION OF ATORVASTATIN CALCIUM

NANOPARTICLE WITH Moringa Oleifera GUM

N. PUNITHA, M. MANGALAM, K.VIJAYALAKSHMI

59. EFFECT OF NATURAL POLYMER ON SOLUBILITY OF ATORVASTATIN

CALCIUM INCLUSION COMPLEX BY NANOPRECIPITATION METHOD

N. PUNITHA, K.VIJAYALAKSHMI, M. MANGALAM


RAJAH SERFOJI GOVERNMENT COLLEGE (AUTONOMOUS) (Nationally Accredited at the B++ Level by NACC & Affiliated to Bharathidasan University)

Thanjavur - 613 005 Ph: 04362 - 226417 Fax: 04362 - 226417

E-mail: [email protected], Web: www.rsgc.ac.in

Dr. S. ANBALAGAN Ph.D., Principal

FOREWORD

I am delighted to know that Thin Film Physics and Nanoscience Laboratory, Department

of Physics of our institution has taken the second time an organizing the “National Conference

on Thin Film Science and Nanotechnology (NCTFSANT - 2015)” in our campus during 2 & 3,

March 2015. Thin films are corner stones of science and technology. NanoScience and

Nanotechnology has become one of the fast developing fields of research in the past few

decades. It has a multidisciplinary nature with tremendous potential to create new devices

and materials with a wide range of applications. I confident that this conference will sensitize

the participating delegates about the different faces of Nano; in particular the opportunities

and challenges open to young researchers working in this area. Further I would like see our

institution strengthening the relationship with the collaborator IICPT by conducting more

events of this nature in future. I would like to congratulate the organizing chairs

Dr.S.Sakthivel, Mrs.S.Anjali and their team for their efforts in organizing this National

conference in our campus and providing a platform for the academicians, researchers and

industrialists working in the area of Thinfilm and Nano to deliberate the problems and

solutions pervading this significant area. Dr. S. ANBALAGAN Ph.D.,

Principal

mailto:[email protected]


PREFACE

Thin Films and Nanotechnology are the vital and fundamental part of material

science. This increasing demand has led to the discovery of new materials with excellent

properties. The development in the preparation, properties and applications of

technologically important materials has given us the impetus to organize the First National

Conference on Thin film Science and Nanotechnology (SECOND –NCTFSANT-2015) at Rajah

Serfoji Govt. College, Thanjavur during March 2-3, 2015 with support from RSGC and

UGC.The continuous and constant encouragement and support from the

Principal Dr.S. Anbalagan, Rajah Serfoji Govt. College, Thanjavur is gratefully

acknowledged. We also extend our gratitude to Mrs.A.S. Gladys HoD, PG & Research

Department of Physics, and Other Department HoDs Rajah Serfoji Govt. College, Thanjavur

for their support and encouragement. I thank all the invited speakers for their valid

contribution for the National conference. I am very grateful to all the faculty members and

research scholars of PG & Research Department of Physics, Rajah Serfoji Govt. College,

Thanjavur for their untiring cooperation for the successful conduct of this SECOND

NCTFSANT-2015. We could like to place on record our warm appreciation for the valuable

suggestions extended by the members of the advisory committee.

Dr.S. SAKTHIVEL Convener and Secretary


Mrs.A.S.Gladys

Head &Asso.Prof. of Physics

PG & Research Department of Physics, Thin Film Physics and Nano Science

Laboratory, Rajah Serfoji Government College, Thanjavur, Tamil Nadu, India, has come out

with an innovative programme of conducting UGC - SERO Sponsored First National

Conference on Thin Film Science and Nano Technology (Second - NCTFSANT - 2015), invite

students, faculty members and other industry/ R&D persons from different colleges,

universities and industries, make them to exhibit their research concepts and outputs. The

dedicated team of faculty members under the leadership of Dr. S. Sakthivel, Convener

Second - NCTFSANT - 2015, has made elaborate arrangements for the successful conduct of

the event, besides bringing out a souvenir. I am confident that this venture will stimulate all

the participants of Second - NCTFSANT - 2015.

Once again I would like to congratulate the Organizing Secretaries of this conference

Dr. S. Sakthivel, Mrs. S. Anjali and the team of faculty members for organizing this kind of

conference.I wish the SECOND–NCTFSANT–2015 a grand success.

Mrs.A.S.Gladys


Dr.D.Mangalaraj Prof & Head Dept.of Nanoscience & NanoTechnology Bharathiyar University Coimbatore

“MESSAGE”

I am happy that PG and Research Department of Physics of Rajah Serfoji

Government College (Autonomous), Thanjavur, is organizing UGC - SERO Sponsored Second National Conference on Thin Film Science And Nano Technology (SECOND NCTFSANT - 2015) March 2nd & 3rd, 2015.Thin film and Nanotechnology of the fast developing fields of research in the past few decades. It has a multidisplinary nature with tremendous potential to create new devices and materials with a wide range of applications. It is anticipated that nanotechnology will contribute to building a society with accessible clean energy and clean water, new industries and jobs, improved health care, and extended life span with high quality. The market opportunity is substantial. Science and engineering at the nanoscale will have a dramatic impact on fields such as computing, electronics, telecommunications, energy, environment and food.

I hope that the deliberations and recommendations of the conference will be useful. I congratulation the organizing team of this conference and wish them a grand success.

Dr.D.Mangalaraj


J. Philip

Director

Sophisticated Test & Instrumentation Centre

Cochin University of Science & Technology

Cochin 682 022

[email protected]

-------------------------------------------------------------------------------------------------------------------------------

“MESSAGE”

I am extremely very happy to note that, the PG and Research Department of

Physics, Rajah Serfoji Government College (Autonomous), Thanjavur – 613 005, Tamilnadu,

India, organizes a“UGC – SERO sponsored Second National Conference on Thin Film

Science and Nano Technology (SECOND–NCTFSANT–2015)”during 2nd and 3rd March,

2015.I came to know that, Eminent Scientists, Researchers and Motivators from the related

fields will address and interact with the participants.

I would like to congratulate the Organizing Secretaries of this conference

Dr. S. Sakthivel, Mrs. S. Anjali and the team of faculty members for organizing this kind of

conference.I wish the SECOND–NCTFSANT–2015 a grand success.

J. Philip


Dr. P. BALASUBRAMANIAM

Professor & Coordinator UGC-SAP (DRS-II)

Department of Mathematics

Gandhigram Rural Institute - Deemed University

Gandhigram - 624302

Dindigul District

Tamil Nadu, INDIA

MESSAGE

After more than 20 years of basic nanoscience research and more than a decade of

focused Research and Development, applications of thin film science and nanotechnology are

delivering in both expected and unexpected ways on nanotechnology’s promise to benefit

society. Nanotechnology is helping to considerably improve, even revolutionize, many

technology and industry sectors: information technology, energy, environmental science,

medicine, homeland security, food safety, and transportation, among many others. In fact,

Nanotechnology is being projected by science policy makers as the solution to all the problems

of humanity. Consequently, it is almost mandatory now to include “Nano” somewhere in the

research proposals on almost any subject to have a good chance of funding by S & T agencies

globally. Duly realizing this, PG & Research Department of Physics, Thin Film Physics and

Nano Science Laboratory, Rajah Serfoji Government College, Thanjavur, Tamil Nadu, India, has

come out with an innovative programme of conducting UGC - SERO Sponsored First National

Conference on Thin Film Science and Nano Technology (Second - NCTFSANT - 2015), invite

students, faculty members and other industry/ R&D persons from different colleges, universities

and industries, make them to exhibit their research concepts and outputs. The dedicated team of

faculty members under the leadership of Dr. S. Sakthivel, Convener Second - NCTFSANT -

2015, has made elaborate arrangements for the successful conduct of the event, besides bringing

out a souvenir. I am confident that this venture will stimulate all the participants of Second -

NCTFSANT - 2015.

(P. BALASUBRAMANIAM)


Message

Thin film and nano technology is very important because of many benefits such as

environmental protection, social responsibilities in order to provide an improved quality of

life and a clean source of energy for current and future generations, energy security, jobs

and economy. The three days “National conference on thin film science and nano

technology (NCTFSANT 2015)” to be held in march 2&3rd, 2015 in Rajah Serfoji govt.

college, Thanjavur, India focuses on this timely important the dramatic area. It gives me a

great pleasure to participate in organizing the event and to welcome all of you. I wish you

fruitful, interesting and beneficial program and also that you have a pleasant stay in

Thanjavur, India.

Dr.S.Balakumar

Director

Centre for Nanotechnology

Madras University

Chennai


OPUNTIA STRICTA FRUIT AS A NOVEL NATURAL DYE MATERIAL FOR DYE

SENSITIZED SOLAR CELL (DSSC) APPLICATIONS


Thin film Physics and Nano Science Laboratory,

PG and Research Department of Physics,

Rajah Serfoji Govt., College (Autonomous), Thanjavur, Tamilnadu, INDIA.

Email: *[email protected]; [email protected];

Mobile: +91-9095611000*; +91-9600764968;

Abstract

Natural dye molecules are used as light harvesting material in photovoltaic cells. Here a

solid-state absorber was used as a sensitizer in conjunction with the Opuntia Stricta fruit dye.

Nanostructured Titanium dioxide (TiO2) photo anode was prepared by doctor bladding technique

on chemically sprayed Indium Tin Oxide (ITO) glass substrates. Natural dyes (Opuntia Stricta

fruit) have been used for the fabrication of dye sensitized solar cells (DSSC) with a novel route.

The surface morphology was studies using X-ray diffraction (XRD), Scanning electron

microscopy (SEM). The optical studies were done by UV - visible absorption spectroscopy. The

solar cell efficiency has been calculated and is found to be 0.59% to 0.92% with different dye

conditions.

Keywords: Opuntia Stricta fruit dye, DSSC, Titanium dioxide, Doctor Bladding.


SYNTHESIS, MOLECULAR STRUCTURE, SPECTROSCOPIC

CHARACTERIZATION AND QUANTUM CHEMICAL CALCULATION STUDIES OF

2-(2-BROMOETHYL)-1H-ISOINDOLE-1, 3(2H)-DIONE

K. Govindarasu and E. Kavitha

Department of Physics (Engg.), Annamalai University, Annamalainagar 608 002, India

*Corresponding author: [email protected]

*Corresponding author:Tel.: +91 9659598584

Abstract

High quality single crystal of efficient novel nonlinear optical (NLO) 2-(2-Bromoethyl)-

1H-isoindole-1,3(2H)-dione crystal has been grown and its structure has been characterized by

Fourier Transform Infrared (4000-400 cm-1), Fourier Transform Raman (3500-50 cm-1) and

single-crystal X-ray diffraction techniques. The vibrational wavenumbers were computed using

Density Functional Theory (DFT) and are assigned with the help of potential energy distribution

(PED) method. The geometrical parameters of the title compound obtained from X-Ray

diffraction (XRD) studies are compared with the calculated (DFT) values using 6-31G(d,p) basis

set. Stability of the molecule, hyperconjugative interactions, charge delocalization and

intramolecular hydrogen bond has been analyzed by using natural bond orbital (NBO) analysis.

Electronic structures were discussed by Time Dependent Density Functional Theory (TD-DFT)

and the relocation of the electron density was determined. Nonlinear optical (NLO) properties

were also investigated. The Time dependent Density Functional Theory (TD-DFT) method has

been used to calculate energies, oscillator strengths of electronic singlet–singlet transitions and

the absorption wavelengths. The Higher occupied molecular orbital (HOMO) and The Lower

unoccupied molecular orbital (LUMO) analysis are used to determine the charge transfer within

the molecule. Comprehensive theoretical and experimental structural studies on the molecule

have been carried out by FT-IR, FT-Raman and Ultra Violet–visible spectrometry (UV-vis).

Key words: XRD, FTIR, FT-RAMAN, UV, NBO, NLO.



FABRICATION OF HETEROJUNCTION LEAD SULFIDE QUANTUM DOT SOLAR

CELLS (QDSSC) BY THIN FILM TECHNIQUES






Mobile: +91-9095611000*; +91-9600764968;

ABSTRACT

We have explored Vacuum evaporated CdS as a heteropartner for PbS QD solar cells for

comparison with ZnO and nanostructure TiO2. CdS is a non-stoichiometric n-type semiconductor

with direct band gap energy of 2.42 eV. Our investigations of this device design show an

optimized double layer CdS film thickness of 70 and 65 nm and an optimized PbS QD diameter

of ∼2.85 nm, corresponding to a bandgap energy of ∼1.6 eV. Under simulated AM1.5 G

illumination, we attain short circuit current as high as 12 mA-cm-2

, an open circuit voltage of

0.65 V and efficiency as high as 3%. To our knowledge, no previous report has been made on

photovoltaic devices based on Vacuum evaporated CdS as a window layer for a colloidal

PbS QD thin film absorber layer.

Keywords: Quantum dot, PbS, CdS, Solar cell, Thin film


TIGHT FOCUSING PROPERTIES OF AZIMUTHALLY POLARIZED HOLLOW

GAUSSIAN BEAM THROUGH A DIELECTRIC INTERFACE

M Udhayakumara, M Lavanyab, J.William Charles., K.B. Rajesha*

a, a*,cDepartment of Physics, Chikkanna Government Arts College, Trippur, Tamilnadu,India

bDepartment of Physics, PSGR Krishnammal College for Women, Coimbatore, Tamilnadu,India.

*Corresponding author Email:[email protected]

Abstract

The tight focusing properties of azimuthally polarized Hollow Gaussian Beam (HGB)

with on-axis spiral optical vortex focused through a dielectric interface is investigated

theoretically by vector diffraction theory. It is observed that the presence of dielectric interface

generates focal shift and proper tuning of phase parameter leads to focal shift along optical axis

towards the aperture and makes the focal segment exactly at the geometrical focus. In addition,

focal shift direction can also be adjusted by changing direction of phase parameter.

Keywords: Vector diffraction theory, Hollow Gaussian Beam, Focal shift.

SEM-EDX STUDIES ON CALCIUM PHOSPHATE TYPE OF URINARY STONE

Dr. R. SELVARAJU*& S.SULOCHANA**

* Associate Professor, Department of Engineering Physics, FEAT Annamalai University,

Tamil Nadu.

Corresponding author: Dr. R. Selvaraju, 9994784685, drselvaraju feat au & gmail.com.

ABSTRACT

Urinary stone disease most affected from men and women for world wide. The stone

compositions maximum amount present in calcium and phosphate. The morphological structure

studies from different layers of calcium phosphate type of urinary stones are studied by

SEM. The base elements are identified by EDX method. The energy peaks of calcium, oxygen

and phosphate are present in this technique. The base elements are discussed.

Keywords: SEM, EDX, Calcium phosphate, urinary stone.


GROWTH OF THIN FILM NANOSTRUCTURES AND LEAD SULPHIDE QUANTUM

DOTS FOR HYBRID HETEROJUNCTION SOLAR CELLS


Thin film Physics and NanoScience Laboratory,

PG and Research Department of Physics

Rajah Serfoji Govt., College (Autonomous), Thanjavur-613 005, Tamilnadu, INDIA

E-mail: *

[email protected];[email protected]; *Mobile: +91-9095611000; +91-9600764968;

ABSTRACT

Colloidal quantum dots offer broad tuning of semiconductor band structure via the

quantum size effect. Hybrid bulk heterojunction PbS quantum dot (QD) solar cells fabricated

using thermally evaporated CdS as the n-type window layer. Hot-injection method (Hines and

Scholes et al,) was conducted by heating a mixture of lead oxide (PbO) and oleic acid (OA, as

capping ligands) in octadecene (ODE) at 150 °C under Ar for one hour followed by the injection

of a solution of (TMS)2S (sulfur source) in ODE at 150 °C. Our investigations of this device

design show an optimized double layered CdS film thickness of 10 nm and 65 nm and an

optimized PbS QD diameter of 3 nm, corresponding to bandgap energy of 1.5 - 1.6 eV. Under

simulated AM 1.5 illumination, we attain short circuit current (Isc), open circuit voltage (Voc) and

efficiency of this solar cell. PV measurements show enhanced charge transfer at the hybrid bulk

heterojunction interface of nanostructure and QDs after ligand exchange which accordingly

improves the performance of solar cells.

Keywords: Hybrid bulk heterojunction, PbS, Thermal evaporation, Hot injection method.

Reference:

1. M. Mazloum- Ardakani et al, Effect of PbS Film Thickness on the Performance of Colloidal

Quantum Dot Solar Cells, JNS 3 (2013 3) 17-23.

2. L.-Y. Chang et al, Low-temperature solution-processed solar cells based on PbS colloidal

quantum dot/CdS heterojunctions, Nano Letters 13 (2013) 994–999.


CHARACTERIZATION OF HIGHLY TRANSPARENT ZnO THIN FILMS PREPARED

BY THERMAL EVAPORATION TECHNIQUE

N.H.Sheeba.1, P.V.Sreenivasan2 and Rachel Reena Philip1*

1 Thin film Research Lab, U.C.College, Aluva 2Department of Chemistry, U.C.College, Aluva

*Corresponding author: [email protected]

Abstract:

Among the semiconducting, wide band gap, transparent conducting oxides, ZnO stands

as a prominent candidate for efficient window layers in solar energy conversion devices, which

requires low resistivity and high transmittance. The most popular, cost effective method for ZnO

preparation is chemical bath method, which lacks from quality of films. For obtaining

homogeneous, crystalline, quality ZnO thin films for device fabrication, here we adopted a two-

stage technique.Zn films are deposited onto glass substrates bythermal evaporationin

vacuum~10-5 mbar in a metallic chamber. In the second stage, the Zn filmsare subjected to

thermal oxidation by‘air annealing’uptoa temperature of 350⁰C, to form very transparent ZnO

films.Structural analysis (X-ray diffraction),indicatedthat the ZnO thin films so produced possess

nanosized (~ 22nm)polycrystalline structure with preferred orientation along (002). SEM images

indicate formation of nano rods randomly oriented on the substrate surface. The optical

parameters like transmittance, optical bandgap (3.23eV),photoresponse and spectral responseof

the as-prepared ZnO films are obtained through optical absorbance and photosensitivity

measurements.A resistivity ~ 10 Ωm is shown by the as-prepared ZnO films. The temperature

dependence of electrical conductivity indicate an activation energy of0.651eV, indicating a

defect state. High transmittance and better Photoresponse reveals the suitability of the as-

prepared ZnO films in the field of optoelectronic applications.

Keywords.TCO; ZnO; optical bandgap; electrical conductivity.



COMMERCIAL GRADE FLUORINE DOPED TIN OXIDE (FTO) TRANSPARENT

FILMS PREPARED BY THERMAL EVAPORATION






Mobile: +91-9095611000*; +91-9600764968;

ABSTRACT

Transparent, conducting thin films of Fluorine doped tin oxide (FTO) have been

prepared by thermal evaporation method. Films grown from an FSn (10 wt. %) source at 175°C

in 0.32 mTorr of O2 gas have resistivity of 3.2×10-4

Ω cm and transparency greater than 95%

over the visible spectrum. The resistivity of these FTO films was 3.2×10-4

Ω·cm which is

comparable to high quality films reported in the literature. X-ray diffraction and Hall

measurements can be used to further characterize these films and refine deposition parameters.

The structure was confirmed by XRD, SEM. The optical analysis reveals the bandgap, Refractive

Index (n), Absorption coefficient more than 104 cm

-1, Optical conductivity, and electrical

conductivity of the film have potential application in photovoltaic devices.

Keywords: Fluorine doped Tin Oxide (FTO), Thermal evaporation, photovoltaic devices.


CHARACTERISATION STUDY OF ELECTRICALLY CONDUCTIVE PANI COATED

TEXTILE FABRICS AND ITS APPLICATION OF EMI SHIELDING

Dr.S.Sakthivel* and A.Boopathi


Rajah Serfoji Govt. College, Thanjavur - 613 005, Tamilnadu, India

E-mail: *[email protected]; [email protected] *Mobile: +91-9095611000, +91-9965642215

Abstract

Conductive polyaniline (PANI) is nowadays in the forefront because of its very

good electrical conductivity combined with other beneficial properties such as light weight, good

attrition of all type substrates low cost and simple synthesis and preparation methods. Not only

PANI in the powder form, but also thin or thick film are widely investigated, because they can be

used in wide field of applications, like strain sensor, antistatic and anticorrosive coating of in the

field of conductive textiles to use the EMI shielding cloth productions. In this work deals with

the structural, Morphological and electrical properties of PANI coated cotton, polyester and

cotton blended polyester in textile fabric substrates. The conductive textile substrates were

prepared by in-situ chemical oxidative polymerization of aniline monomer and ammonium per

sulphate as oxidant. The structural and morphological features of the resultant fabrics were

analyzed by Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy

(SEM) studies and structural properties of XRD. The electrical conductivity was expressed as

both bulk and surface properties. The PANI-coated fabrics thus produced are suitable in

application of EMI shielding.

Keywords: Electrically conductive textile fabrics, Polyaniline synthesis, XRD, SEM,

EMI Shielding materials.

References

1. J. Molina, M.F. Esteves et al. Polyaniline coated conducting fabrics. Chemical and

electrochemical characterization, European Polymer Journal 47 (2011) 2003–2015.

2. Sudha, Sarita S Nair, Devendra Kumar, Investigations on Functioning of Conducting

Fabrics for Application in Wearable Clothes, International Journal of Research in Advent

Technology, Vol.2, No.5, May 2014 E-ISSN: 2321-9637.

3. MacDiarmid, A.G. ¨Synthetic Metals¨: a Novel Role for Organic polymers. Current

Applied Physics 1 (2001) 269–279.

mailto:*[email protected]



ROLE OF ELECTRON-PHONON INTERACTION IN MAGNETIC POLARON MODEL

OF EUB6

Jayita Chattopadhyay

Rishi Bankim Chandra College for Women

Department of Physics,

Naihati-743165, West-Bengal, India

E-mail: [email protected]

Abstract:

To explain the anomalous transport properties of a low carrier density magnetic system

EuB6, theferromagnetic Kondo lattice model has been explored with the strong interaction

between charge carriers and local magnetic moments. The role of lattice degrees of freedom is

studied through the mean-field approximation. Judging from negligible isotope effect in EuB6,

the lattice effect is expected to be small, but thermal-conductivity measurement on EuB6 implies

non-negligible electron-phonon scattering near and below Tc. Although the electron-phonon

interaction is much weaker than the electron-magnon interaction, small lattice effect can change

the transport properties of the magnetic polaron appreciably.The resistivity peak near 15K is

thought to be from the magnetic polaron formation and the lattice effect helps it with enhancing

the localization tendency. Below Tc, there appear overlaps between polarons and the resistivity

decreases abruptly. The influences of phonon and impurity sites play a crucial role in helping the

formation of the magnetic polaron near Tc and producing the resistivity peak and the metal to

insulator transition, which are consistent with experimental results.

Key Words: electron-phonon interaction, ferromagnetic Kondo lattice model, magnetic polaron.


THERMALLY VACUUM EVAPORATED Cu/SnS/ZnO THIN FILMS FOR

PHOTOVOLTAIC APPLICATIONS





E-mail: *

[email protected];[email protected] *Mobile: +91-9095611000; +91-9600764968;

Abstract

Tin Sulphide (SnS) thin film based Cu/SnS/ZnO solar cell layers were deposited by

thermally vacuum evaporated on flexible substrates. While the Zinc oxide and TCO thicknesses

were kept constant at 100nm, Copper layer thicknesses of 0.25µm and SnS of 3 µm were used to

obtain the metallic precursors. X-ray diffraction studies reveal polycrystalline films with

preferential orientation. The films with lowest oxide layer thickness exhibited binary metal alloy

contents, which disappears with higher SnS precursor layer thickness. The surface morphology

and elemental composition of SnS thin films was determined from scanning electron microscopy

and energy dispersive spectroscopy analysis respectively. UV-Vis absorption studies reveals that

SnS thin film has band gap (1.30 eV) and large absorption coefficient value, it was optimal for

photovoltaic applications. The manipulations in the parameters of the layers result into increase

of conversion efficiency (η) value of 15.92 % - 16.41 %.

Keywords: Tin Sulphide, thermal evaporation, absorption coefficient, polycrystalline films.


STRUCTURAL AND OPTICAL PROPERTIES OF METAL OXIDE DOPED ZnO THIN

FILMS BY THERMAL EVAPORATION






Mobile: +91-9095611000*; +91-9600764968;

ABSTRACT

ZnO is a wurtzite-type semiconductor with band gap of 3.37 eV and excitation

binding energy (60 meV). The direct band gap and a large exciton binding energy are useful for

applications in photo detectors, ultra-violet nano-laser, and nano generation. Samples of ZnO,

Zn0.5Mg0.5O and MgO were prepared by co-precipitation method. X-ray diffraction (XRD)

pattern infers that the sample of ZnO is in single-phase wurtzite structure (hexagonal phase,

space group P63mc), MgO crystallizes in cubic Fd3m space group and Zn0.5Mg0.5O represents

mixed nature of ZnO and MgO lattices. Similar features were observed from Raman

spectroscopy. The energy band gaps estimated from UV-Vis spectroscopy are found to be 4.21

and 3.42 eV for ZnO and Zn0.5Mg0.5O samples respectively.

Keywords: ZnO, MgO lattices, co-precipitation, wurtzite.


SYNTHESIS AND CHARACTERIZATION OF Sn DOPED ZnO NANOPARTICLES BY

PRECIPITATION METHOD





E-mail: *

[email protected];[email protected] *Mobile: +91-9095611000; +91-9600764968;

Abstract

Doping with selective elements offers an effective method to enhance and control the

electrical and optical properties of ZnO nanostructures, which is crucial for its practical

application. Sn doped ZnO nanoparticles with different dopant concentrations were prepared by

simple precipitation method. The Sn doped ZnO nanoparticles have got the particle size in the

range of 20nm to 60 nm. As the Sn concentration increases the agglomeration takes place and

absorption edge slightly shifts towards the longer wavelength region which may be attributed to

the decrease in band gap. The Sn doped nano particles have changed the optical properties

effectively which was confirmed by PL spectroscopy. In this paper, we report synthesis,

characterization and optical properties of Sn doped ZnO nanopaerticles by precipitation method

and its characterization by using XRD, SEM, EDAX and UV-Vis and PL spectroscopic methods.

Keywords: precipitation method, nanostructures, EDAX, Sn, ZnO, PL spectroscopy.


NANOCOMPOSITES POLYTHIOPHENE/ZINC OXIDE THIN FILM

AND STUDY OF CHARACTERISATIONS





Abstract

Nanocomposites of polythiophene (PTh) and zinc oxide (ZnO) nanoparticles (NPs) were

prepared by oxidative polymerization of thiophene monomer with iron (III) chloride as a catalyst

in the presence of ZnO nano particles. After polymerisation, polythiophene in oxidized form was

reduced by the extraction in methanol solution. The composite material was dissolved into M-

Pyrol, N-Methyl-2- pyrrlidinone (NMP) to produce a composite precursor solution of PTh-ZnO

Nanocomposites. The composites solutions were deposited onto glass substrates using a spin-

coating technique to fabricate PTh-ZnO thin film. Nanocomposites thin film were characterised

by Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM)

studies and structural properties of XRD analysis.

Keywords: Conjugated polymer; Polythiophene; Nanocomposites; Zinc oxide; Spin

coating; Thin films.

References

1. Vu Quoc Trung et al. Photo-electrochemically behaviours of ZnO nanoparticles containing

polythiophene layers prepared by chemically deposition, Journal of Chemistry, Vol. 44 (4),

P. 514 - 519, 2006.

2. Mostafa Nasrollahzadeh et al. Synthesis and characterization of nanostructured

polythiophene in aqueous medium by soft-template method, Journal of Applied Chemistry,

Vol. 8, No. 27, 2013.




STRUCTURAL AND ELECTRICAL PROPERTIES OF ZnO FLOWER-LIKE

STRUCTURES

SUGAPRIYA, S.a, LAKSHMI, S.a, SENTHIL KUMARAN, C. K.b*, MANIVANNAN Nb

and CHANDAR SHEKAR Bb*

aDepartment of Chemistry, Coimbatore Institute of Technology, Coimbatore, India.

bDepartment of Physics, Kongunadu College of Arts and Science, Coimbatore, India.

Corresponding author Email id: [email protected]; [email protected]

ABSTRACT

In this paper we report the structural and electrical properties of ZnO nano flower-like

structure synthesized by Chemical bath deposition (CBD). X-ray diffraction (XRD) result shows

that the ZnO nano flower-like structure with hexagonal phase and no secondary phase was

observed. The crystallite size has been calculated by Scherrer’s equation which was found to be

in the range 30-50 nm. SEM images reveal that ZnO nano flower-like structure has the length of

~5.5 µm and base of ~5 µm are consistent with the results from SEM investigations. I-V

characteristics have been carried out to study the conducting behavior of the prepared ZnO nano

flower-like structures.

KEYWORDS: ZnO nano flower-like structure, CBD, I-V characteristics, SEM.



PERFORMANCE OF QUANTUM DOT SENSITIZED SOLAR CELLS BASED ON

COLLOIDAL PbS: In/CdS QUANTUM DOTS






Mobile: +91-9095611000*; +91-9600764968;

ABSTRACT

Colloidal PbS: In and CdS quantum dots (QDs) are sequentially assembled onto a

nanocrystalline TiO2 film to prepare a PbS: In/CdS co-sensitized photo electrode for QD

sensitized solar cells (QDSCs). In the cascade structure of the electrode, the reorganization of

energy levels between PbS and TiO2 forms a stepwise structure of band-edge levels which is

advantageous to the electron injection into TiO2. Energy conversion efficiency of 3.07% is

achieved with the doped electrode, under the illumination of one sun (AM1.5, 100mWcm-2

).

Besides, a remarkable short circuit current density (up to 27mA⋅cm−2

) is achieved in the resulting

colloidal PbS: In/CdS quantum dot sensitized solar cell.

Keywords: Colloidal PbS, TiO2, quantum dots, In, CdS.


PHASE CHANGE ON TiO2 NANOPARTICLES BY ANNEALING

SUGAPRIYA, S.a*, LAKSHMI, S.a, SENTHIL KUMARAN, C. K.b*, MANIVANNAN Nb

and CHANDAR SHEKAR Bb

aDepartment of Chemistry, Coimbatore Institute of Technology, Coimbatore, India.

bDepartment of Physics, Kongunadu College of Arts and Science, Coimbatore, India.

Corresponding author email id : [email protected] ; [email protected]

ABSTRACT

TiO2 nanoparticles have been prepared by a step process of hydrothermal redox route and

annealed at different temperatures. The as-prepared TiO2 are amorphous, and then it transformed

into anatase phase on annealing at 550°C, and rutile phase on annealing at 950°C. The X-ray

diffraction results showed that TiO2 wafer-like structure with grain size in the range of 30 to 45

nm for anatase phase and 65 to 80 nm for rutile phase have been obtained. SEM images show the

formation of TiO2 nanoparticles. Optical absorption studies reveal that the absorption edge shifts

towards longer wavelength (red shift) with increase of annealing temperature.

Key Word: TiO2 nanoparticles, Anatase phase, Rutile phase, Structural property and Optical

property

SYNTHESIS AND CHARACTERIZATION ANALYSIS OF ZnS: Mn2+ NANO

PARTICLES

Balachandramohan.M and Ganeshamurthy.G

Department of Physics, Erode Arts & Science College, Erode – 638 009.

Abstract

ZnS: Mn2+ Nano Particles was prepared by employing chemical method. As prepared

ZnS: Mn2+ Nano Particles were characterized by FTIR, X – ray diffraction (XRD) and Scanning

Electron Microscopy (SEM) studies.

Key Words: ZnS: Mn2+, FTIR, XRD and SEM.


SYNTHESIS AND CHARACTERIZATION OF CADMIUM SULFIDE (CdS) QUANTUM

DOTS (QDS) FOR QUANTUM DOT SENSITIZED SOLAR CELL APPLICATIONS






Mobile: +91-9095611000*; +91-9600764968;

ABSTRACT

The main objective of the work is to present a systematic study on the growth, physical

and chemical characterization of Cadmium sulfide (CdS) quantum dots were prepared at various

time durations and deposited by sol-gel and hydrothermal method. The structural, morphological

and optical properties were studied using powder X-ray diffraction (PXRD), scanning electron

microscope (SEM) and UV-Vis NIR analysis respectively. From the observed PXRD pattern the

particle size was calculated using Debye Scherrer’s method.. The cell parameters are well agreed

with standard JCPDS data. Using CdS QDs quantum dot sensitized solar cells (QDSSC) were

fabricated on FTO substrates. Sol-gel method synthesized TiO2 nanoparticles, CdS quantum

dots, I3-/I- electrolytes and Pt as counter electrode were used for cell fabrications.

Keywords: Quantum Dots, hydrothermal method, solar energy, Sol-gel


EFFECT ON THE GROWTH PERFORMANCE OF BROILER CHICKENS BY

SELENIUM NANOPARTICLES SUPPLEMENTATION

Senthil Kumaran C K1*, Sugapriya S2, Manivannan N1 and Chandar Shekar B1*

1Department of Physics, Kongunadu College of Arts and Science, Coimbatore, India.

2Department of Chemistry, Coimbatore Institute of Technology, Coimbatore, India.

Corresponding author Email id: [email protected] ; [email protected]

Abstract

Selenium nanoparticles were prepared by chemical method. The x-ray diffraction studies

indicated the formation of Se with hexagonal phase and no secondary phase was observed. The

composition analysis results show that Se is present in the sample. TEM images reveal that Se

nanoparticles size ranging from 30-50 nm. The present study was conducted to determine the

effect of prepared selenium nanoparticles on the growth performance of broiler chickens. Thirty

numbers of a day old Vencobb broiler chicks were wing banded, weighed and randomly

allotted to three groups with ten chicks in each group. Their weight gain was taken for six

consecutive weeks to observe the effect of dietary selenium nanoparticles over growth utilization

of birds. Three different groups, T1 control standard diet, T2 Standard diet + Sodium selenium

0.3mg/Kg diet and T3 Standard diet + Selenium nanoparticles 0.3mg/Kg diet respectively. The

percent weight gain was highest in T3 group as compare to T1 and T2 which was supplemented

0.3 mg Se/kg of feed. Therefore it was concluded that supplementation of selenium nanoparticles

0.3 mg/kg diet of poultry enhances the growth rate in the broiler birds.

Keywords: Selenium nanoparticles, Nutrient utilization, weight gain.



QUANTUM SIZE EFFECT ON THE OPTICAL AND ELECTRONIC OF CdSe QD






Mobile: +91-9095611000*; +91-9600764968;

Abstract

Present paper deals a comprehensive analysis of variation in excitonic charge, Bohr

radius, photo emission and optical absorption band gap as a function of size of CdSe quantum

dot. In quantum dot (QD) Bohr radius is of the same order of magnitude as the diameter of the

QD giving rise to quantum confinement of the exciton which results in discrete energy level

rather than the continuous bands of bulk semiconductor crystals. The band gap may be easily

tuned by simply changing the diameter of the QD as long as the diameter is smaller than the

Bohr radius. Excitonic binding energy as a degree of size of QD is also calculated which further

relates with the difference in PE electronic and OA optical band gaps. It is also shown that with

increase in size of CdSe QD, the excitonic binding energy decreases which consequently

increases differences in two band gaps. Our results are very well comparable with the established

results. Explanation for the origin of the unusual optical properties of CdSe QD has been also

discussed.

Keywords: Semiconductors, Quantum Dots, Optical properties, Excitons.


SYNTHESIS AND CHARACTERIZATION OF FE3O4 NANOPARTICLES

BY CHEMICAL PRECIPITATION METHOD.

J.Vijayapriya1, M.Anbarasu2 and K.Parasuraman1* 1Department of Physics, Poompuhar college, Melaiyur, Tamilnadu, India

2Department of Physics, Annai College of Arts and Science, Kovilachery, Kumbakonam

Corresponding Author email ID: [email protected]

Abstract:

The iron oxide of magnetite (Fe3O4) nanoparticles was synthesized by chemical

precipitation method. The structural, morphology and functional groups were characterized by

X-ray diffraction (XRD), Scanning electron microscopy (SEM) and Fourier transform infrared

(FT-IR) spectroscopy. The average particle size of Fe3O4 nanoparticles was found to be 15-20

nm and it was calculated from XRD study, and the particles are in spherical shape. These

particles are further used in application in various fields of Bioseparation, Biosensor, Storage

device and biomedical fields.

Keywords: Iron oxide, nanoparticles, chemical precipitation, FT-IR


SYNTHESIS AND CHARACTERIZATION OF NIFE2O4 NANOPARTICLES

BY CHEMICAL CO-PRECIPITATION METHOD

S.James Jayaseelan1, M.Anbarasu2 and K.Parasuraman3

1Sevamandir Matric HSS, Parangipettai - 608502, Tamilnadu, India 2Department of Physics, Annai College of Arts and Science, Kovilachery, Kumbakonam

3 Department of Physics, Poompuhar College, Melaiyur, Tamilnadu, India


Abstract:

Synthesis of spinal nickel Ferrite nanoparticles with average size in the range of 20-25 nm has

been achieved using chemical co-precipitation technique in aqueous medium without any

surfactants or organic capping agent. The structure and morphology of the prepared sample were

characterized by X-Ray Powder Diffraction, Scanning Electron Microscope (SEM) and FT-IR

measurements. These NiFe2O4 nanoparticles are further used in application in various fields

such as Storage device, MRI, Bioseparation etc.,

Keywords: NiFe2O4, nanoparticles, co-precipitation, FT-IR, X-Ray Powder Diffraction


SYNTHESIS OF MONODISPERSE In DOPED ZnO NANOCRYSTALS






Mobile: +91-9095611000*; +91-9600764968;

ABSTRACT

Transparent conductive oxides (TCOs) are impurity doped metal oxides, such as

indium oxide (In2O3), zinc oxide (ZnO), and tin oxide (SnO2), which exhibit excellent properties

of controllable low resistivity and high transparency in the visible region. A method for the

synthesis of high quality indium-doped zinc oxide (In-doped ZnO) nanocrystals were developed

using a one-step ester elimination reaction based on alcoholysis of metal carboxylate salts. The

resulting nearly monodisperse nanocrystals are well-crystallized with typically crystal structure

identical to that of wurtzite type of ZnO. Structural, optical, and elemental analyses on the

products indicate the incorporation of indium into the host ZnO lattices. The individual

nanocrystals with cubic structures were observed in the 5% In–ZnO reaction, due to the

relatively high reactivity of indium precursors. The reactions can be monitored by Fourier

transform infrared spectroscopy (FTIR) and UV–Visible absorption spectra (UV–Vis), making

them ideal for investigating the processes. Our results may provide insights for the growth of

doped oxide nanocrystals.

Keywords: Monodisperse, zinc oxide, In-doped ZnO, nanocrystal.


COMPARISON STUDY OF CZTS THIN FILMS GROWN USING VACUUM AND

SOLUTION BASED METHODS






Mobile: +91-9095611000*; +91-9600764968;

ABSTRACT

Results regarding structural properties, optical properties and photovoltaic characteristics

of Cu2ZnSnS4 (CZTS) thin films prepared by sequential deposition of Cu, ZnS and Sn thin films

by vacuum evaporation are compared with those obtained with CZTS films grown by sequential

deposition of Cu2SnS3 (CTS) and ZnS thin films by CBD Process. X-ray diffraction analysis

(XRD) which is mostly used for phase identification cannot clearly distinguish the formation of

secondary phases such as Cu2SnS3, since both compounds have similar diffraction patterns;

therefore, Raman scattering analysis was used to distinguish these phases. Further, the

photovoltaic characteristics short-circuit current density (Isc), open-circuit voltage (Voc),a fill

factor(FF) and efficiency are studied under AM 1.5(100mW/Cm2) illumination.

Keywords: Thin films, CZTS, CBD, Raman, XRD.


SYNTHESIS AND STRUCTURAL DETERMINATION OF Fe3O4 NANOPARTICLES

BY HYDROTHERMAL ROUTE.

T.Saranya1, M.Anbarasu2 and K.Parasuraman1* 1Department of Physics, Poompuhar college, Melaiyur, Tamilnadu, India

2Department of Physics, Annai College of Arts and Science, Kovilachery, Kumbakonam


Abstract:

In the present study, we report on the synthesis of Fe3O4 (magnetite) nanoparticlees by

Hydrothermal method. In this process we used Iron chloride (FeCl2.4H2O) and NH4 (15ml)

Solution as a precursor for the preparation of Fe3O4 nanoparticles. In the Hydrothermal process,

the Fe3O4 nanoparticles were synthesized at low temperature (1600C). The synthesized

nanoparticles were characterized by Fourier Transform Infrared Spectroscopy (FT-IR), X-Ray

Diffraction (XRD), Scanning Electron Microscopy (SEM). From the XRD measurements, we

found that the prepared magnetite nanoparticles are cubic inverse spinel structure and with

average size of 15-18 nm.

Keywords: Hydrothermal method, XRD, magnetite nanoparticles, SEM

SYNTHESIS AND CHARACTERIZATION OF NiFe2O4 NANOPARTICLES


P.Samiyammal1, M.Anbarasu2 and K.Parasuraman3* 1Department of Physics, RDB College of Arts and Science, Papanasam, Tamilnadu, India

2Department of Physics, Annai College of Arts and Science, Kovilachery, Kumbakonam 3* Department of Physics, Poompuhar College, Melaiyur, Tamilnadu, India

*Corresponding Author email ID: [email protected]

Abstract:

Nano sized NiFe2O4 were synthesized using hydrothermal route, using Nickel Chloride,

Ferrous Chloride and NH4 solution (base). The phase, morphology and functional group of the

resulting nanoparticles were studied by XRD (X-Ray Diffraction), SEM (Scanning Electron

Microscopy) and FT-IR (Fourier Transform Infrared Spectroscopy). The Spinal cubic structure

with average particle size (15-18 nm) was carried out from the XRD study. Roughly spherical

shape was observed from the SEM results. The 581cm-1 bands corresponding to the metal oxide

band was observed from the FT-IR study.

Keywords: Nickel Chloride, Ferrous Chloride, NiFe2O4, nanoparticles


GREEN APPROACH FOR PURIFICATION AND HYDROTHERMAL SYNTHESIS OF

TIN SULFIDE NANOPARTICLES FROM WASTE WATER






Mobile: +91-9095611000*; +91-9600764968;

ABSTRACT

Tin is a high value metal and its compounds are also used in many modern and

conventional industrial processes such as lithography, alloys for electronic circuits, reaction

catalysis, anti corrosion coating agent, dopant for electrode of modern solar cells. Presence of tin

in water bodies causes enormous environmental concern due to its acute toxicity to living beings.

We demonstrate a simple and zero emission process for extraction of tin ions from aqueous

solution using dithiocarbamate-based copolymer and its single step quantitative recovery and

transformation into SnS nanoparticles. The polymer shows high metal extraction capacity, 1.06 g

SnCl2 per gram of polymer. The polymer metal composite and SnS nanoparticles are analyzed

using SEM, FTIR, XRD spectroscopy techniques. The FTIR shows formation of Sn-S bonding in

the polymer metal composite. This study has implication for cost effective and green approach

for purification of water and waste management. We used the potential of the dithiocarbamate-

based copolymer to extract tin chloride through chemical bonding, thereby transforming it into

tin sulfide nanoparticles.

Keywords: Hydrothermal Synthesis; Water Purification, Tin Sulfide Nanoparticles;

References:

1. R. K Bhardwaj, et.al., “In-Situ Growth of CdS Nanorods in PTB7 by Solvothermal

Process for Hybrid Organic Inorganic Solar Cell applications,” Physics of Semiconductor

Devices, Springer International Publishing, Switzer-land, 2014, pp. 331-333.

2. N. A. Khan, Z. Hasan and S. H. Jhung, “Adsorptive Removal of Hazardous Materials

Using Metal-Organic Frameworks (MOFs): A Review,” Journal of Hazardous Materials,

Vol. 244-245, 2013; pp. 444-456.http://dx.doi.org/10.1016/j.jhazmat.2012.11.011


STRUCTURAL ANALYSIS OF CoFe2O4 NANOPARTICLES

BY CHEMICAL CO-PRECIPITATION METHOD.

S.Sathiya1, M.Anbarasu2 and K.Parasuraman1*

1Department of Physics, Poompuhar college, Melaiyur, Tamilnadu, India 2Department of Physics, Annai College of Arts and Science, Kovilachery, Kumbakonam


Abstract:

CoFe2O4 nanoparticles were prepared by chemical co-precipitation method. The CoFe2O4

nanoparticles prepared using Cobalt Chloride, Ferrous Chloride and NH4 solution were

characterized by XRD (X-Ray Diffraction), SEM (Scanning Electron Microscopy) and FT-IR

(Fourier Transform Infrared Spectroscopy). From XRD study it is found that cubic spinal

structure was formed of CoFe2O4 nanoparticles. The SEM image reveals the synthesized

particles are in spherical shape and metal oxide band was observed from the FT-IR study. These

Cobalt Ferrite nanoparticles are used in various fields such as storage devices and medical fields.

Keywords: CoFe2O4, co-precipitation, Cobalt Ferrite nanoparticles, FT-IR

PREPARATION AND CHARACTERIZATION CoFe2O4 NANOPARTICLES


M. Gurumoorthy1, M.Anbarasu2 and K.Parasuraman1*



Abstract:

Metal oxide (CoFe2O4) nanoparticles were prepared by hydrothermal method using

Cobalt Chloride, Iron Chloride and NH4 (15ml) solution. The CoFe2O4 nanoparticles were

prepared by hydrothermal method and characterized by XRD (X-Ray Diffraction), SEM

(Scanning Electron Microscopy) and FT-IR (Fourier Transform Infrared Spectroscope). From

the XRD study we found that the CoFe2O4 nanoparticles were formed of spinal cubic structure

with average particle size of 15-22 nm. The prepared CoFe2O4 nanoparticles roughly spherical in

shape, was noted from the SEM study. From the FT-IR study it was observed that the 574cm-1

was corresponding to the metal oxide (CoFe2O4) band that occurred in CoFe2O4 nanoparticles.

Keywords: Hydrothermal method, spinal cubic structure, CoFe2O4, SEM


INVESTIGATION OF THE OPEN-CIRCUIT VOLTAGE IN NANOSTRUCTURED

TITANIA FILMS SENSITIZED SnS QUANTUM DOT SOLAR CELLS






Mobile: +91-9095611000*; +91-9600764968;

ABSTRACT

Quantum dots (QDs) have attracted much attention for use in photovoltaic

applications because of their potential for overcoming the limits of conventional single-junction

devices. One problem associated with solar cells using QDs is that the open-circuit voltage (Voc)

always decreases with the addition of QDs with respect to the reference cell without QDs.

Different size SnS quantum dots are prepared by SILAR method. Size of the particles is varied

from 2.1 to 16 nm by varying the deposition cycles from 25 to 150. solar cells are fabricated with

these quantum dots. Cu2S coated ITO is used as counter electrode instead of the conventional

platinum electrode and Na2S as electrolyte. Cu2S acts as a good catalyst for the polysulfide

electrolyte. On comparing with a cell having platinum counter electrode and iodine based

electrolyte, Cu2S -polysulfide combination found to improve both the short circuit current and

fill factor of the solar cell.

Keywords: photovoltaic cells, SnS, Counter electrode,


FT-IR, XRD AND SEM STUDY OF MnFe2O4 NANOPARTICLES

BY CHEMICAL CO-PRECIPITATION METHOD.




Abstract:

MnFe2O4 nanoparticles were prepared by hydrothermal method using MnCl2.4H2O ,

FeCl2.4H2O and NH4(15ml) solution. It is found that the prepared MnFe2O4 nanoparticles were

of spinel cubic structure with average particle size of 10-20 nm from the XRD study. From the

SEM study it is noted, the prepared MnFe2O4 nanoparticles are roughly spherical in shape.

Functional group of –OH band and Fe-O band were observed from the FT-IR study. This spinel

structure of prepared MnFe2O4 nanoparticles are used for the storage device applications.

Keywords: hydrothermal method, XRD, nanoparticles, MnFe2O4, spinel structure.

SYNTHESIS AND CHARACTERIZATION OF MFe2O4 NANOPARTICLES





Abstract:

MFe2O4 (M=Ni, Co, Mn, … ) nanoparticles is used in various fields. In the present study,

it is reported on the synthesis of MnFe2O4 nanoparticles by hydrothermal method. In this process

Iron Chloride, Manganese Chloride (FeCl2.4H2O), (MnCl2.4H2O) and NH4 (15ml) solution as

precipitation agent for the preparation of MnFe2O4 nanoparticles. In the hydrothermal process

the MnFe2O4 nanoparticles were synthesized at low temperature (1600C). The synthesized

nanoparticles were characterized by FT-IR (Fourier Transform Infrared Spectroscopy), XRD (X-

Ray Diffraction) and SEM (Scanning Electron Microscopy).

Keywords: MFe2O4, nanoparticles, hydrothermal, FT-IR, Scanning Electron Microscopy


GREEN SYNTHESIS OF QUATERNARY NANOCRYSTALLINE Cu2ZnSnS4 POWDER

USING HYDROTHERMAL METHOD






Mobile: +91-9095611000*; +91-9600764968;

ABSTRACT

Chalcogenide-based materials have been attractive candidates for future thin film

photovoltaic applications due to their advantages of high efficiency, long-term stability and

diversity of fabrication methods. CZTS is promising for low-cost thin-film solar cells due to its

suitable bandgap energy of 1.4-1.5eV and the large absorption coefficient over 104

cm-1

.

Nanocrystalline Cu2ZnSnS4 (CZTS) powder was synthesized by a hydrothermal process, using

thiourea as sulfur precursor. The powder was qualitatively analyzed using X-ray to identify the

phase, and the size of the particles was determined using transmission electron microscopy

(TEM). Raman peak at 337.5 cm−1

confirms the formation of pure CZTS particles. The powder

was also synthesized solvothermally using ethylenediamine as solvent. The hydrothermally

synthesized powder indicated the presence of the kesterite phase Cu2ZnSnS4 and particle size of

about 4-5 nm. This environmentally green synthesis by hydrothermal route can produce gram

scale synthesis of material with a chemical yield in excess of ∼ 90%. UV Vis absorption spectra

measurements indicated the band gap of as-synthesized CZTS nanoparticles to be 1.7 eV, which

is near the optimum value for photovoltaic solar cell, showing its possible use in Photovoltaics.

Keywords: Cu2ZnSnS4 (CZTS), Kesterite, thin film, Solvothermal, hydrothermal process


PREPARATION AND CHARACTERISATION OF CONJUGATED POLYMER

POLYANILINE AND ZINC OXIDE NANOCOMPOSITES THIN FILM





Abstract

A simple approach for the synthesis of conjugated polymer of Polyaniline by the

polymerisation of the monomer (aniline) by using oxidizing agent (ammonium persulphate) and

dopant (H2SO4) under the constant stirring at ambient temperature during the polymerisation

time nanostructure zinc oxide powder was added by different molar concentrations and finally

we get the nano composite material of Polyaniline with zinc oxide. Nano composite material use

to prepare the thin film by using spin coating method and the application new material for

chemical and biological sensors. The prepared thin films were characterised by using FTIR

spectroscopy and structural studies of X-ray diffraction (XRD) and morphological

characterisation of Scanning Electron Microscopy (SEM).

Keywords: Conjugated polymer; Polyaniline; Nanocomposites; Zinc oxide; Spin coating;

Thinfilms.

References

1. T. Skotheim, Ed., Marcel Dekker, Handbook of Conducting Polymers, Vols. 1 and 2,

Inc., New York, (1986).

2. S. B. Kondawar, M J Hedau, V A Tabhane, S P Dongre, UB Mahatme and R A Mondal,

Mod. Phys. Let. B, World Sci. Publ. Vol. 20(23), (2006) 1461.

3. S. B. Kondawar UB Mahatme et al. Characterizations of zinc oxide nanoparticles

reinforced conducting polyaniline composites, Arch. Appl. Sci. Res., 2010: 2 (1)247-253.

4. Siti Fariza Binti Mat Tahir et al. Effect of ZnO Addition on Structural Properties of ZnO-

PANi/Carbon Black Thin Films, Sains Malaysiana 41(8)(2012): 1001–1004.




PREPARATION OF NANOCOMPOSITES POLYPYRROLE AND ZINC OXIDE THIN

FILM CHARACTERISATION AND APPLICATION OF HUMIDITY SENSOR





Abstract

Polypyrrole/Zinc oxide (ZnO) Nanocomposites were synthesised by chemical oxidative

polymerization of Pyrrole with ZnO nanoparticles. A pyrrole/ZnO nanoparticles molar ratio was

changed to investigate the effect of ZnO nanoparticles to the characteristic of the Polypyrrole

(PPy). The synthesised Nanocomposites of Polypyrrole/ZnO material is used to prepare the

thinfilm form on glass substrates by spin coating method. The prepared Nanocomposites

thinfilms is characterized by Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction

(XRD), UV – visible spectroscopy and Scanning electron microscopy (SEM).

Keywords: Polypyrrole, Zinc oxide, Polymer Nanocomposites, XRD, SEM.

References

1. Naveen Kumar S K, Gayithri K C, Kiran S Fabrication and Characterization of High

Performance Resistive Type Humidity Sensor based on ZnO/Pyrrole composite materials,

Int.J. ChemTech Res.2014-2015, 7(2), pp 936-942.

2. Wang W S,Virkar A V, A Conductometric humidity sensor based on proton conducting

perovskite oxides, Sens. Actuators B, 2004, 98, 282-290.

3. Sakai Y, Sadaoka Y, Matsuguchi M , Humidity sensor based on polymer thin films,

Sens. Actuators B, 1996, 35- 36, 85-90.




FABRICATION AND CHARACTERIZATION OF COPPER ZINC TIN SULFIDE AS A

SUPERIOR COUNTER ELECTRODES PREPARED BY DROP COATING METHOD

FOR DYE SENSITIZED SOLAR CELL (DSSC) APPLICATIONS






Mobile: +91-9095611000*; +91-9600764968;

ABSTRACT

CZTS nanocrystal films as counter electrodes in photoelectrochemical solar cells

plays an important role in transferring electrons from the external circuit back to the redox

electrolyte for catalytic reduction of the redox electrolyte, CZTS NC film was prepared by drop

coating method. Wurtzite and kesterite Cu2ZnSnS4 (CZTS) nanocrystals were employed as

counter electrode (CE) materials for dye sensitized solar cells (DSSCs). Compared to kesterite

CZTS, the wurtzite CZTS exhibited higher electro catalytic activity for catalyzing reduction of

iodide electrolyte and better conductivity. Accordingly, the DSSC with wurtzite CZTS CE

generated higher power conversion efficiency (3.45%) than that of Pt (3.13%) and kesterite

CZTS (2.49%) CEs. The excellent performance of the wurtzite CZTS CE paves a new pathway

for preparing cheap and highly efficient CEs for DSSCs.

Keywords: CZTS nanocrystals, counter electrodes, wurtzite, DSSC


PREPARATION AND INVESTIGATION OF PZT-PVDF COMPOSITES OF 0-3

CONNECTIVITY

P. Gowdhaman1*, K. Antony Raj1 and V. Annamalai2**

1*Research Fellow, 1Department of Physics, Chikkanna Government Arts College, Tiruppur,

Tamilnadu, India. 2Assistant professor of Physics, Chikkanna Government Arts College, Tiruppur, Tamilnadu,

India.

*Corresponding Author: Email:[email protected]

Abstract

Ferroelectric ceramic-polymer composites of 0-3 connectivity with specific dimensions

were prepared using hot press technique. The experimental and theoretical density of the samples

made from 0.1 to 0.8 PZT volume fractions were found. The surface analysis were done by using

SEM micrographs. The dielectric properties of the composites on PZT volume fraction are

reported and resolved. The dielectric constant found to be increase with increase in temperature

and volume fractions of the composite. The piezoelectric strain coefficient (d33) increases with

increment in the volume fraction and the voltage coefficient (g33) values were estimated. The

remnant polarization and coercive field were analyzed from the ferroelectric measurements.

Key words: PZT-PVDF; ferroelectric composite; piezoelectric strain coefficient; voltage

Coefficient; remnant polarization; coercive field.


PREPARATION AND CHARACTERISATION OF ELECTRICALLY CONDUCTIVE

POLYPYRROLE COATED TEXTILE FABRICS AND ITS APPLICATION OF STRAIN

SENSOR




E-mail: *[email protected]; [email protected] *Mobile: +91-9095611000

Abstract

The sensitivity and stability are mainly factors to hold back the applications of

Polypyrrole coated fabrics. In this paper we have prepared and characterisation study of two

different types of fabric substrates coated by conjugated polymer of conductive polypyrrole in

simple and novel techniques of chemical oxidative polymerisation of Pyrrole monomer. The

prepared uniformly coated textile fabric substrates were characterised by Fourier transform

infrared (FTIR) spectroscopy, Structural analysis of X-ray diffraction spectroscopy and surface

morphology study of Scanning electron microscopy (SEM).

Keywords: Electrically conductive textile fabrics, Polypyrrole synthesis, XRD, SEM,

Fabric Strain sensor.

References

1. Abbasi R, Militky J, Characterization of Textile Based Strain Sensor, International

Journal of Applied Research on Textile Volume 1, Issue 1, pp 13-21, December 2013.

2. Xue, P., Tao, X. M, Tsang, H. Y. (2007). In situ SEM studies on strain sensing

mechanisms of PPy-coated electrically conducting fabrics, Applied Surface Science, 53,

pp. 3387-3392.

3. Li, Y., Cheng et al. (2005). A flexible strain sensor from polypyrrole-coated fabrics,

Synthetic Metals, 151, pp. 89-94.




SPECTROSCOPIC AND THEORETICAL INVESTIGATIONS ON VILDAGLIPTIN

R. Solaichamy., J. Karpagam

Dept.of physics (Engg), Annamalai University, Annamalainagar, Chidambaram 608 002,

Tamil Nadu, India.

Email:[email protected] +917708513780

Abstract

In this study, geometrical optimization, spectroscopic analysis, electronic structure and

nuclear magnetic resonance studies of Vildagliptin were investigated by utilizing HF and

DFT/B3LYP with 6-31G (d, p) as basis set. The Fourier transform infrared (FT-IR) and FT-

Raman spectra of Vildagliptin were recorded in the region 4000–400 cm-1 and 3500–50 cm-1,

respectively. Complete vibrational assignments, analysis and correlation of the fundamental

modes for the title compound were carried out. UV–Visible spectrum of the compound that

dissolved in ethanol were recorded in the region 200–800 nm and the electronic properties

HOMO and LUMO energies were measured by TD-DFT approach. The calculated HOMO and

LUMO energies show that charge transfer occurs within the molecule. The molecular stability

and bond strength have been investigated by applying the Natural Bond Orbital (NBO) analysis.

The 1H and 13C nuclear magnetic resonance (NMR) chemical shifts of Vildagliptin were

calculated using the GIAO method in ethanol solution and compared with the measured

experimental data. All the calculated results were compared with the available experimental data

of the title molecules.

Keywords: Vildagliptin, DFT, UV-Visible, NMR, NBO, HOMO-LUMO.


CHARACTERISATION OF TRUNCATED OCTAHEDRAL CERIA NANOPARTICLES

ACHIEVED VIA SURFACTANT ASSISTED ROUTE

Renuka N. Ka.*, Praveen A. K. a, Divya T. a, Anas K.b aDepartment of Chemistry, University of Calicut, Kerala – 673635, India

Tel: 91 0494 2407413; Fax : (+91) 494 2400269; *e-mail: [email protected] bR&D Division, Sud-Chemie India Pvt Limited, Binanipuram, Kerala-683502, India

Abstract

Present work deals with a detailed characterisation of ceria nano particles obtained from

aqueous cerium nitrate in presence of ammonia and CTAB. The characterisation tools include

XRD, thermal studies, N2 adsorption analysis, SEM, TEM, DRUV spectra, and XPS. Electron

Microscopy studies revealed the particles to be of size ~7 nm. XRD study identified cubic CeO2

belonging to Fm3m space group. The UV spectrum of ceria particles was blue-shifted with

respect to the bulk material indicating quantum-confinement, which is an expected phenomenon

of particles in nano regime. Small particle size of the oxide led to high oxygen vacancy and

associated higher concentration of Ce3+, rendering the system suitable for catalytic applications.

Keywords: Ceria nanoparticles; precipitation; electron microscopy, optical properties

SYNTHESIS CHARACTERIZATION AND DIELECTRIC STUDIES OF

MORPHOLOGICALLY CONTROLLED CERIA NANOSTRUCTURES

Divya T. and Renuka N. K.*

Department of Chemistry, University of Calicut, Kerala – 673 635, India

Tel: 9447647790*; Fax : (+91) 494 2400269

*E-mail: [email protected]

Abstract

The present work examines the dielectric property of ceria nanostructures of two different

morphologies. Morphological characteristics and crystalline nature of the structures were

analysed by electron microscopic analysis and powder X-ray diffraction analysis. Nanosized

particles of cubic and spherical morphologies were obtained with average particle sizes 16 nm

and 20 nm respectively. Dielectric studies showed a more dielectric dispersion of the materials

at low frequency region that attains a temperature independent constant value at high

frequencies. The a.c. electrical conductivity of the systems was also measured from the

permittivity values and dielectric loss factor.

Key words: Ceria nanosystems, hydrothermal synthesis, dielectric property, loss tangent factor




DEVICE MODELING AND SIMULATION OF CIGS THIN FILM SOLAR CELL

USING SILVACO ATLAS






Mobile: +91-9095611000*; +91-9600764968;

ABSTRACT

Numerical simulation is a powerful tool and many parameters can be varied to model

the observed phenomenon. It can also offer a physical explanation of the observed phenomenon

since internal parameters such as the recombination rate and the free carrier densities can be

calculated. In this work we have used Silvaco Atlas software on the design and the study of a

CIGS solar cell. 2 D Silvaco Atlas software is used for the study of a CIGS thin film solar cell in

the configuration: ZnO (200 nm)/n-type CdS (50 nm)/ p-type CIGS (350 nm)/Mo. The cell

performance is evaluated by implementing the defects created at the grain boundaries of the

polycrystalline CdS and CIGS material and at the interface CdS/CIGS. The J-V characteristics

and the external quantum efficiency EQE are simulated under AM 1.5 illumination. The

conversion efficiency of 20.35% is reached and the other characteristic parameters are simulated:

the short circuit current density Jsc equals 35.62 mA/cm2, the open circuit voltage Voc is of 0.69

V and the fill factor FF is of 82.7 %. The calculated external parameters of the solar cell are in

good agreement with the measured characteristics. The simulation results also showed that the

rise of the CdS thickness decreases all output parameters and the external quantum efficiency

while the rise of the CIGS thickness improves all photovoltaic parameters and the external

quantum efficiency. The highest efficiency of 21.08 % is reached for the CIGS thickness of

5 μm.

Keywords: solar cell parameters, CIGS solar cell, Computer modeling – Silvaco Atlas.


PHYTOSYNTHESIS OF SILVERNANO PARTICLESIN CRUDE LATEX EXTRACTS

OF CALOTROPISPROCERAL, PERGULARIADAEMIAL,

ANDSARCOSTEMMAINTERMEDIUMDECNE.

Dr.T.Malarvili *, B.Ramya2 , and S.Vijikumar3

1,Department of Biochemistry,Rajah Serfoji Government College(Autonomous)

Thanjavur

2,3Departmet of Biochemistry,JJ College of Arts and Science(Autonomous),

Pudukkottai,TamilNadu

*Corresponding Author: [email protected]

ABSTRACT:

Medicinal plants consist of components of therapeutic values and have been used as

remedies for human diseases since long.Plant latex plays an important role in

pathogenprevention.CalotropisproceraL.,PergulariadaemiaL.,SarcostemmaintermediumDecne

., all these experimental plants were latex yield plants from Asclepiadaceaefamily.In the

present study, silver nanoparticles (AgNPs) were successfully synthesized from AgNO3 mixed

crudelatexof alotropisproceraL.,PergulariadaemiaL.,SarcostemmaintermediumDecne.,through

bio reduction method at laboratory temperature. Synthesized silver nanoparticles were

characterized using UV-Vis, FTIR, and XRD. UV-Vis spectra showed absorption peaks at 214

- 222 nm. FTIR spectra analysis confirmed the functional groups involved in the silver

nanoparticles formation. The X-ray diffraction results clearly showed that the silver

nanoparticles formed by the reduction of Ag+ ions by the latex of

CalotropisproceraL.,PergulariadaemiaL.,SarcostemmaintermediumDecne are crystalline in

nature.


THE EFFECT OF DOPANT CONCENTRATION ON TRANSPARENT

CONDUCTING AL-DOPED ZNO THINFILMS FOR EFFICIENT Cu2ZnSnS4

THIN-FILM SOLAR CELLS PREPARED BY VACUUM EVAPORATION METHOD






Mobile: +91-9095611000*; +91-9600764968;

ABSTRACT

Al-doped ZnO (AZO) thin films were deposited on indium tin oxide substrates by

vacuum evaporation method. The influence of the doping level of the ZnO: Al films was

investigated. The results of the X-ray diffraction and scanning electron microscopy analysis

revealed that the structural properties of the AZO films were found polycrystalline with a

hexagonal wurtzite-type structure along the (002) plane. The grain size of the AZO films was

observed as approximately 6-8 nm in the film doping with 4 mol% ZnO: Al concentration. The

thin films also exhibited an optical transmittance as high as 90 % in the wavelength range of

100–1,000 nm. The optical band gap increased from 3.33 to 3.45 eV. Based on the Hall studies,

the lowest resistivity was observed in the film doping with 3 mol% ZnO: Al concentration. The

sheet resistant, carrier concentration and Hall mobility values were found as 10.78 Ω/ square,

9.03 9 1018 cm-3

and 22.01 cm2 /v s, respectively, which showed improvements in the properties

of AZO thin films. The ZnO: Al thin films were used as a buffer layer in thin-film solar cells with

the structure of soda-lime glass/Mo/Cu2ZnSnS4/ZnS/ ZnO/Al grid. The best solar cell efficiency

was 2.3 % with VOC of 0.430 V, JSC of 8.24 mA cm-2 and FF of 68.1 %.

Keywords: Thin film, vacuum evaporation, Al-doped ZnO (AZO)


SYNTHESIS AND CHARACTERIZATION OF LEAD SULFIDE (PbS) THIN FILMS BY

CHEMICAL BATH DEPOSITION (CBD) METHOD.






Mobile: +91-9095611000*; +91-9600764968;

ABSTRACT

Lead sulfide (PbS) thin films were prepared at various time durations and deposited by

chemical bath deposition (CBD) method. The structural, morphological and optical properties

were studied using X-ray diffraction (XRD), scanning electron microscope (SEM) and UV-Vis

analysis respectively. From the observed PXRD pattern the particle size was calculated using

Debye Scherrer’s method. The calculated particle size was 18.6 nm and the corresponding (hkl)

plane was indexed. The lattice parameter of the lead sulfide (PbS) thin films was calculated. The

cell parameters are which are well agreed with standard JCPDS data.

Keywords: Semiconductors, Quantum Dots, Semiconductor devices,.


Efficacy of Zirconium nanoparticles against metallo beta-lactamase and biofilm producing

Pseudomonas aeruginosa

S.Rajasekar, and A.Mohankumar*,

Division of Microbial Technology

PG and Research Department of Zoology

Chikkanna Govt. Arts College,

Tirupur-641602, Tamilnadu, India.

*Corresponding Author: [email protected]

Abstract

Pseudomonas aeruginosa contributes to a multitude of infections exhibiting intrinsic

resistance to numerous antibiotics. Metallo beta-lactamase and biofilm production is the most

worrisome resistant mechanisms observed in P. aeruginosa. Emergence of antimicrobial

resistance by pathogenic bacteria is a major health problem in recent years. ZnO nanoparticles

comprises of well-known inhibitory and bactericidal effects. The present study is designed to

determine the efficacy of ZnO and nanoparticles against metallo beta-lactamase and biofilm

producing P. aeruginosa. Biofilm and metallo beta-lactamase production was tested by

combined disc test and tissue culture plate method. ZnO nanoparticles were obtained and tested

against two metallo beta-lactamase and biofilm producing isolates. Both the nanoparticles

showed appreciable activity at all tested concentrations. ZnO Different concentrations of 0.2, 0.4

and 0.6 mg/ml. Electrophoretic analysis of plasmid DNA prepared was carried out a 0.8%

Agarose gel electrophoresis plasmids was carried out for 22 MDR isolates. Three strain PA41,

PA 43, and PA44 isolates were showed two fragment of plasmid with size of 1500 and 1000bp.

Thus, it is concluded that ZnO nanoparticles may serve as a promising antibacterial agents in

future.


PREPARATION OF TiO2/CdS/CdSe/ZnS FILMS FOR QUANTUM DOT SENSITIZED

SOLAR CELL BY SILAR METHOD






Mobile: +91-9095611000*; +91-9600764968;

ABSTRACT

In this paper, we prepared CdS/CdSe/ZnS co-sensitizer on mesoporous TiO2 surfaces

with different SILAR cycles. The optical properties of the photo anodes and the photovoltaic

performance of the corresponding solar cells were investigated. The photovoltaic performance

of quantum dot-sensitized solar cells (QDSSCs) based on mesoscopic TiO2 spheres. A series of

CdS/CdSe/ZnS co-sensitized TiO2 photo anodes for QDSSCs were prepared by successive ionic

layer adsorption and reaction (SILAR) processes. The growth of CdS, CdSe and ZnS layers were

monitored by taking UV-Visible absorption spectra and the SILAR cycles of CdS, CdSe and ZnS

show different impact on the performance of QDSSCs. With the deposition times of CdS, CdSe

changing (from 1 to 5 cycles), and the parameters of the device is changed. In addition to

determine the quality of QDSSCs, we used modern physical methods to calculate the

dynamic resistance values as RS, RSH, Rd, RD. The effect of SILAR cycles on the dynamic

resistance was discussed detail.

Keywords: SILAR, QDSSCs, CdS/CdSe/ZnS, TiO2 photo anodes


SOLUBILITY IMPROVEMENT OF SIMVASTATIN USING

NATURAL POLYMER BY NANOTECHNIQUE

M. Mangalam, N. Punitha, K.Vijayalakshmi- Asst. Prof. of Chemistry, Rajah Serfoji Govt.

College, Thanjavur.

C. Sebastian Antony Selvan – Asst. Prof. of Chemistry, R.V. Govt. Arts College, Chengalpattu.

ABSTRACT

The objective of the present study was to formulate surface solid dispersions (SSD) of

simvastatin to improve the aqueous solubility and dissolution rate to facilitate faster onset of

action .The solubility of the poorly soluble drugs can be improved by various techniques such as

micronization, solubilization, salt formation, complexation with polymers, change in physical

form, use of prodrugs and drug derivatization, pH alteration, addition of surfactants , and others.

Among the various approaches, the solid- dispersion technique has often proved to be the most

successful in improving the dissolution and bioavailability of poorly soluble, active

pharmaceutical ingredients because it is simple, economical, and advantageous. Simvastatin

(SIM), a crystalline compound, is practically insoluble in water and hence poorly absorbed from

the GI tract , It is a potent and specific inhibitor of 3-hydroxy-3- methyl-glutaryl coenzyme A

(HMG CoA) reductase , which catalyzes the reduction of HMG CoA to mevalonate. Thus,

simvastatin arrests a key step for cholesterol biosynthesis in the liver and is widely used in the

treatment of hypercholesterolemia and dyslipidemia as an adjunct to diet. After oral

administration, Simvastatin is metabolized to its β-dihydroxy acid form (simvastatin acid) by the

cytochrome-3A system in the liver, where it inhibits the rate-limiting step in cholesterol

biosynthesis. This leads to up-regulation of low-density lipoprotein (LDL) receptors and an

increase in catabolism of LDL cholesterol. Being a BCS Class II drug, it often shows dissolution

rate-limited oral absorption and high variability in pharmacological effects. Therefore,

improvement in its solubility and dissolution rate may lead to enhancement in bioavailability . In

the present study, SSDs of simvastatin were prepared by physical mixture, kneading method and

Nanoparticle is prepared using solvent evoporation method. The nano based simvastatin were

characterized by differential scanning calorimetry (DSC), powder x-ray diffractometry (PXRD),

scanning electron microscopy (SEM), and infrared spectroscopy (IR).

KEY WORDS : Simvastatin, asafoetida, oral bioavailability, solid dispersion, HMG CoA.


MODIFIED NATURAL CARRIER IN SOLID DISPERSION FOR

THE SOLUBILITY ENHANCEMENT OF ROSUVASTATIN CALCIUM BY

NANOTECHNIQUE

K.Vijayalakshmi , N. Punitha, M. Mangalam - Asst. Prof. of Chemistry, Rajah Serfoji Govt.

College, Thanjavur.


Abstract

Poor water solubility is the major drawback for the various types of drugs and many

approaches have been introduced for the solubility enhancement of such drugs. Solid dispersions

have been known to be one amongst the recent means of improving the dissolution rate by

enhancement of solubility, and hence the bioavailability of poorly water soluble drugs. Solid

dispersion is a very useful method for pharmaceutical point of view because of its capability to

solve the solubility problems by using solid dispersion method. The present work was to

investigate the use of natural polymers for the formation of solid dispersion of Rosuvastatin

calcium nanoparticles. It provides special features including enhancement of solubility. In this

work desolvation technique was used to prepare nanoparticles. The behaviors of Rosuvastatin

calcium with natural polymer were characterized by FTIR, DSC, and SEM.

Key words: solid dispersion, solubility enhancement, natural polymer, nanoparticle.


FLEXIBLE SUPERCAPACITORS BASED ON PAPERS COATED WITH CARBON

NANOTUBES






Mobile: +91-9095611000*; +91-9600764968;

ABSTRACT

Thinfilm paper supercapacitors are based on paper electrodes sandwiching an

integrated solid electrolyte and separator layer. A typical finished device with total weight of 0.3

gm exhibits a planar capacitance of approximately 87 µF/cm2 and a specific capacitance

estimated to be 100 F/gm. The developed paper supercapacitor is an improvement over some of

the state-of-art paper supercapacitors reported till date, which show similar specific capacitance

but have more mass than our device. The low total weight of our finished device arises from a

new combination of materials. This device is based on modifying the surface of a commercially

available carbon micro-fiber paper. An important consequence of the surface modification

processes is the incorporation of nano-structured active material and the consequent enhanced

surface area of the carbon micro-fiber paper. This contributes directly to the electrical behavior

of the device. The importance of the surface modification processes is underscored by the

capacitance characteristics of the supercapacitor which clearly show the influence of both silver

nanoparticles and carbon nanotubes as active materials.

Keywords: supercapacitor, flexible supercapacitor, energy storage


NANOSIZED TECHNOLOGICAL APPROACHES FOR THE DELIVERY OF

POORLY WATER SOLUBLE ROSUVASTATIN CALCIUM

K.Vijayalakshmi M. Mangalam, N. Punitha - Asst. Prof. of Chemistry, Rajah Serfoji Govt.

College, Thanjavur.


Abstract

Nanotechnology will affect our lives tremendously over the next decade in very

different fields, including medicine and pharmacy. A major hurdle in pharmaceutical

formulation is water insolubility of most of drugs affecting their stability and bioavailability.

However, a new solution to poorly water soluble drug candidates is now available, i.e.

nanonisation that leads to much more soluble, more biologically available, and safer dosage form

of poorly soluble and poorly bioavailable drugs. Transfer of materials into the nanodimension

changes their physical properties which were used in pharmaceutics to develop a new innovative

formulation principle for poorly soluble drugs. Rosuvastatin Calcium (RST), poorly water

soluble Transfer of materials into the nano dimension changes their physical properties which

were used in pharmaceutics to develop a new innovative formulation principle for poorly soluble

drugs. RST is crystalline nature so it reduces its aqueous solubility and finally that results in an

oral bioavailability of 20%. Thus, the objective of this study was to improve the solubility and

dissolution rate of RST. The purpose of this research is to prepare solid dispersion of

Rosuvastatin calcium using sugar to increase the solubility. Solid dispersion of drug with sugar

was prepared by kneading method and nanoparticles by solvent evaporation method. The

prepared solid dispersions were characterized by DSC, FTIR, and SEM.

Keyword: Rosuvastatin calcium, solid dispersions, Nanoparticle, Sugar.


CHEMICAL BATH DEPOSITED ZnS THIN FILMS WINDOW LAYER FOR

PHOTOVOLTAIC APPLICATION






Mobile: +91-9095611000*; +91-9600764968;

ABSTRACT

Zinc Sulfide thin films (ZnS) have been synthesized by chemical bath deposition

technique. The prepared samples were characterized by X-ray diffraction (XRD), Scanning

electron microscope (SEM), and UV-vis studies. XRD pattern of the prepared sample shows

preferential orientation along (002) crystallographic plane and can be indexed to hexagonal

wurtzite structure. Also XRD confirmed that the ZnS are polycrystalline in nature and no

additional peaks were present showing the formation of pure ZnS nanoparticles (ZnS). The

UV-Vis spectra showed absorbance peaks in the 300-800nm region. Optical transmittance

spectra gives excellent transmittance (>85%) and a sharp cut off edge at 385nm. From the

spectra, direct band gap of ZnS is determined which is 3.37eV at room temperature that makes

ZnS useful for optoelectronic devices such as solar cell, photonic crystals and photodiodes.

Keywords: Zinc Sulfide, chemical bath deposition technique,


COMMERCIAL GRADE TRANSPARENT INDIUM TIN OXIDE FILMS PREPARED

BY THERMAL EVAPORATION






Mobile: +91-9095611000*; +91-9600764968;

ABSTRACT

Transparent, conducting thin films of indium tin oxide (ITO) have been prepared

by reactive thermal evaporation. Films grown from an InSn (10 wt. %) source at 175°C in 0.32

mTorr of O2 gas have resistivity of 2.4×10-4

Ω cm and transparency greater than 95% over the

visible spectrum. The resistivity of these ITO films was 2.4×10-4

Ω·cm which is comparable to

high quality films reported in the literature. X-ray diffraction and Hall measurements can be

used to further characterize these films and refine deposition parameters. The structure was

confirmed by XRD, SEM. The optical analysis reveals the bandgap, Refractive Index (n),

Absorption coefficient more than 104 cm

-1, Optical conductivity, and electrical conductivity of

the film have potential application in photovoltaic devices.

Keywords: Indium Tin Oxide (ITO), Thermal evaporation, photovoltaic devices.


SOLUBILITY AND DISSOLUTION ENHANCEMENT OF SIMVASTATIN USING

GLUCOSE AND GALACTOSE AS HYDROPHILLIC CARRIER

M. Mangalam, N. Punitha, K.Vijayalakshmi- Asst. Prof. of Chemistry, Rajah Serfoji Govt.

College, Thanjavur.


ABSTRACT

Enhancement of solubility, dissolution rate and bioavailability of drug is a very

challenging task in drug development, nearly 40% of the new chemical entities currently being

discovered are poorly water soluble drugs. The solubility and dissolution properties of drugs

play an important role in the process of formulation development. Among all newly discovered

chemical entities most of the drugs are lipophilic and fail to reach market due to their poor water

solubility. The main objective of work to enhance solubility of Simvastatin (SIM) by use of

Glucose and galactose as an hydrophilic carrier .Simvastatin is a BCS Class II drug having low

solubility (1.45 µg/mL) and therefore low oral bioavailability (5%). Simvastatin is chemically

(1S,3R,7S,8S,8aR) - 1,2,3,7,8,8a- Hexahydro-3,7- dimethyl-8-2-[(2R,4R)-tetrahydro-4-

hydroxy-6- oxo-2H-pyran-2-yl]ethyl-1-naphthyl-2,2-dimethyl butyrate is obtained from the

fermentation of Aspergillus terreus. This compound, acts as a highly potent and effective

cholesterol-lowering agent, is being used in the control of hypercholesterolemia. It exhibits a

very important hepatic first-pass metabolism, acting by blocking the 3-hydroxy-3-

methylglutaryl coenzyme A reductase (HMG-CoA), and thereby reducing the low-density

lipoproteins. Simvastatin is a potent inhibitor of HMG-CoA reductase, which is a rate limiting

enzyme in cholesterol bio-synthesis. Being a BCS Class II drug, it often shows dissolution rate-

limited oral absorption and high variability in pharmacological effects. Therefore, improvement

in its solubility and dissolution rate may lead to enhancement in bioavailability . In the present

study, SSDs of simvastatin were prepared by physical mixture, kneading method, solvent

evaporation method. Solid dispersions of simvastatin were characterized by differential scanning

calorimetry (DSC), powder x-ray diffractometry (PXRD), scanning electron microscopy (SEM),

and infrared spectroscopy (IR) and evaluated for drug content, saturation solubility, pH-

dependent solubility.

KEY WORDS: Simvastatin , solubility , absorption, solid dispersion


FABRICATION OF HYBRID CdTe: CdSe BULK HETEROJUNCTION SOLAR CELLS






Mobile: +91-9095611000*; +91-9600764968;

ABSTRACT

Solar cells based on nanoparticles have attracted intense attention in view of their

compatibility with the solution synthesis of materials, low-cost fabrication of devices, and large

area flexibility. A hybrid bulk-heterojunction (HBH) nanostructure providing a large contact area

and interpenetrated charge channels is favorable to an inorganic nanocrystal solar cell with high

performance. For this freshly appeared structure, here in this work, we have firstly explored the

influence of hybrid morphology on the photovoltaic performance of CdTe: CdSe bulk-

heterojunction solar cells with variation in CdSe nanoparticle morphology. Quantum dot (QD) or

nanotetrapod (NT)-shaped CdSe nanocrystals have been employed together with CdTe NTs to

construct different hybrid structures. The solar cells with the two different hybrid active layers

show obvious difference in photovoltaic performance. The hybrid structure with densely packed

and continuously interpenetrated two phases generates superior morphological and electrical

properties for more efficient inorganic bulk-heterojunction solar cells, which could be readily

realized in the NTs: QDs hybrid. This proved strategy is applicable and promising in designing

other highly efficient inorganic hybrid solar cells.

Keywords: nanoparticles, hybrid bulk-heterojunction, Quantum dot, CdTe: CdSe.


PREPARATION AND CHARACTERIZATION OF ATORVASTATIN

CALCIUM NANOPARTICLE WITH Moringa Oleifera GUM

N. Punitha, M. Mangalam, K.Vijayalakshmi- Asst. Prof. of Chemistry, RSG College, Thanjavur.


Abstract

Atorvastatin calcium is a class II drug, with low oral bioavailability (14%), primarily

used for the treatment of dyslipidemia and also for unstable angina, coronary heart disease,

stroke and multiple risk factors for myocardial infarction. Plant gums are being used due to their

abundance in nature, safety and economy. The purpose of this research is to prepare solid

dispersion of Atorvastatin calcium using Moringa oleifera gum to increase the solubility. Solid

dispersion of drug with natural polymer was prepared by kneading method and nanoparticles by

solvent evaporation method. The prepared solid dispersions were characterized by DSC, FTIR

and SEM.

Keyword: Atorvastatin calcium, solid dispersions, Nanoparticle, natural polymer.

References:

1. V.V. Kulthe , P.D. Chaudhari , et al., “Drug resinates an attractive approach of solubility

enhancement of atorvastatin calcium.” Indian J. Pharm. Sci., 2013, 75(5) : 523 - 532.

2. Sinha B, Muller RH, et al., “Bottom-up approaches for preparing drug nanocrystals:

formulations and factors affecting particle size.” Int. J. Pharm., 2013, 453 : 126 - 141.

3. Moschwitzer JP., et al., “Drug nanocrystals in the commercial pharmaceutical

development process.” Int. J. Pharm., 2013, 453 : 142 - 156.

4. Rahat Jahan, Md. Saiful Islam, et al., “In vitro dissolution study of atorvastatin binary

solid dispersion.” Journal of Advanced Pharmaceutical Technology & Research, 2013,

4(1) : 18 - 24.

5. Pallavi Vukkum, J. Moses Babu, et al., “Stress Degradation Behavior of Atorvastatin

Calcium and Development of a Suitable Stability-Indicating LC Method for the

Determination of Atorvastatin, its Related Impurities, and its Degradation Products.”

Scientia Pharmaceutica, 2013, 81 : 93 - 114.

http://www.ncbi.nlm.nih.gov/pubmed?term=Kulthe%20VV%5BAuthor%5D&cauthor=true&cauthor_uid=24403652

http://www.ncbi.nlm.nih.gov/pubmed?term=Chaudhari%20PD%5BAuthor%5D&cauthor=true&cauthor_uid=24403652

http://www.ncbi.nlm.nih.gov/pubmed/24403652


EFFECT OF NATURAL POLYMER ON SOLUBILITY OF

ATORVASTATIN CALCIUM INCLUSION COMPLEX BY

NANOPRECIPITATION METHOD

N. Punitha, K.Vijayalakshmi, M. Mangalam, - Asst. Prof. of Chemistry, RSG College, Thanjavur.


Abstract

Solubility is one of the most important physicochemical properties of drugs. If a

compound has a low aqueous solubility, it may be subjected to dissolution rate-limited or

solubility-limited absorption within the gastrointestinal tract. Atorvastatin calcium is used in the

treatment of primary hypercholesterolemia and dyslipidemia that is classified in class II (low

solubility and high permeability) according to the biopharmaceutical classification system. The

present study was designed to investigate the use of natural polymers in combination with β-

Cyclodextrin for the formation of inclusion complex of Atorvastatin calcium. Nanoparticle is an

interesting approach for poorly soluble drugs. It provides special features including enhancement

of solubility. In this work desolvation technique was used to prepare nanoparticles. The

behaviors of atorvastatin calcium in β-Cyclodextrin and natural polymer were characterized by

FTIR, DSC and SEM.

Keyword: Atorvastatin calcium, β-Cyclodextrin, Nanoparticle, Natural polymer.

References:

1. Furquan Nazimuddin Khan, Mohamed Hassan G. Dehghan, et al., “Enhanced

bioavailability and dissolution of atorvastatin calcium from floating microcapsules using

minimum additives.” Scientia Pharmaceutica, 2012, 80(1) : 215 - 228.

2. Dharmila Panghal, Manju Nagpal, et al., “Dissolution improvement of atorvastatin

calcium using modified locust bean gum by the solid dispersion technique.” Scientia

Pharmaceutica, 2013, 82(1) : 177 - 191.

3. Kesisoglou F, Mitra A., et al., “Crystalline nanosuspensions as potential toxicology and

clinical oral formulations for BCS II/IV compounds.” AAPSJ., 2012, 14 : 677 - 687.

4. Chen H, Khemtong C, et al., “Nanonization strategies for poorly water-soluble drugs.”

Drug Discov., 2011, 16(7/8) : 354 - 360.

5. Rajendra Chouksey, Anand Kumar Jain, et al., “Development, and bioavailability studies

of atorvastatin Nanoemulsion.” Int. J. of Pharm. & Life Sci., 2011, 2(8) : 982 - 988.

http://www.ncbi.nlm.nih.gov/pubmed/?term=Khan%20FN%5Bauth%5D

http://www.ncbi.nlm.nih.gov/pubmed/?term=Dehghan%20MH%5Bauth%5D

http://www.ncbi.nlm.nih.gov/pubmed/?term=Nagpal%20M%5Bauth%5D


UGC-SERO SPONSORED

SECOND

NATIONAL CONFERENCE ON

THIN FILM SCIENCE AND

NANO TECHNOLOGY

MARCH 2-3, 2015

PROGRAMME SCHEDULE


DAY 1, MARCH 2, MONDAY 2015

SESSION-I

TIME TOPIC SPEAKER

10.00-10.30 Key Note Address I Prof.Dr. K.Ramamurthi SRM University

Key Note Address II Prof.Dr. Dr. K.Singaravadivel

Director,IICPT 11.00-11.15 Tea break

SESSION-II TIME TOPIC SPEAKER

11.15-12.00 Thin Film for sustainable Energy

Prof.Dr. K.Ramamurthi SRM University

12.00-12.45 Crystalline Materials

Dr.R.Gopalakrishnan Crystal Lab, Anna University Chennai.

12.45 -2.00 Lunch Break

SESSION-III

TIME TOPIC SPEAKER 2.00-3.30

Food Nano Technology Dr.P.Arunkumar, Dept .of food packaging

Technology

CSIR-CFTRI

Mysore

3.30-4.00 Tea break SESSION-IV

TIME PROGRAMME

9.00-9.30 Registration 9.30-10.00 Inaugurals

TIME TOPIC SPEAKER

4.00-5.00 Thin film Materials Dr.B.ChandraSekar, K.N.Arts&Science College,Coimbatore


DAY 2, MARCH 3, TUESDAY 2015

SESSION-V TIME TOPIC SPEAKER

10.00-11.30 Nano Chemistry Dr.S.Karthikeyan,

ChikkannaGovt.,college,Trippur

11.30-11.45 Tea break

SESSION-VI

TIME TOPIC SPEAKER

11.45-1.00 Thin Film & Nano Materials

Dr.V.Annamalai, ChikkannaGovt.,college,Trippur

1.00-2.00 Lunch Break

SESSION-VII TIME TOPIC SPEAKER 2.00-3.00 Thinfilm science Dr.H.B.Ramalingam,

Govt.,college,Udumalaipettai 3.00-4.00 Nano Micro biology Dr.A.Mohankumar,

ChikkannaGovt.,college,Trippur 4.00-4.15 Tea break

SESSION-VIII

TIME TOPIC SPEAKER

4.15-5.00 Vote of Thanks & Valedictory Function

Dr.S.Sakthivel, Convener -NCTFSANT ‘15 Rajah Serfoji Govt. College, Thanjavur.

Documents

Second National Conference on Thin Film Science and ... · PDF fileSecond National Conference on Thin Film Science and Nanotechnology (SECOND NCTFSANT ... and Nanotechnology (SECOND