Physics

Head of Department

Dr. (Mrs.) Arpita Nath
Ph.D

E-mail:
n.arpita@nitm.ac.in

Faculty

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Professor Ayon Bhattacharjee Professor

Ph.D, NEHU

ayonbh@nitm.ac.in
9485177033

Research Interest

Liquid Crystals, Metal Oxide Semiconductors, Raman Spectroscopy

Education Qualification

Ph.D, NEHU

Publications


1.       K. Thingujam, A. Bhattacharjee, B. Choudhury, R. Dabrowski, Nematic liquid crystals exhibiting high birefringence, Optical Review, Vol.-23, Issue No.-3, Page Nos -409-19, 2016. doi:10.1007/s10043-016-0207-9


2.       S. P. Choudhury, A. Bhattacharjee, Sensing of 0.1 ppm of methanol, ethanol, and propanol vapors at 130° c by SnO2 thin film, Particulate Science and Technology, Vol.-Accepted, 2016. http://dx.doi.org/10.1080/02726351.2016.1154909


3.       D. Bhattacharjee, S. Paul. Choudhury, P. R. Alapati, A. Bhattacharjee, Dielectric relaxation and birefringence study of 7. O5O. 7 dimeric liquid crystal compound, INTERNATIONAL CONFERENCE ON CONDENSED MATTER AND APPLIED PHYSICS (ICC 2015) AIP, Vol.-1728, Issue No.-020155, 2016. http://dx.doi.org/10.1063/1.4946206


4.       D. Bhattacharjee, S. P. Choudhury, A. Bhattacharjee, Correlation between the density and refractive index with higher homologues 5O. m series, Molecular Crystals and Liquid Crystals, Vol.-631, Issue No.-1, Page Nos -69-73, 2016. http://dx.doi.org/10.1080/15421406.2016.1149021


5.       D. Bhattacharjee, P. R. Alapati, A. Bhattacharjee, Negative Birefringence in the Higher Homologues of 5O. m Series of Liquid Crystals, The Journal of Physical Chemistry B, Vol.-120, Issue No.-27, Page Nos -6747–6753, 2016. http://pubs.acs.org/doi/abs/10.1021/acs.jpcb.5b11963


6.       K. Thingujam, A. Bhattacharjee, B. Choudhury, S. D. Sarkar, Optical studies of a binary liquid crystal mixture exhibiting induced smectic A phase, Applied Physics A, Vol.-122, Issue No.-8, Page Nos -1-10, 2016. doi:10.1007/s00339-016-0271-9


7.       D. Bhattacharjee, P. R. Alapati, A. Bhattacharjee, Negative optical anisotropic behaviour of two higher homologues of 5O. m series of liquid crystals, Journal of Molecular Liquids, Vol.-222, Page Nos -55-60, 2016. http://dx.doi.org/10.1016/j.molliq.2016.07.001


8.       S. P. Choudhury, S. D. Gunjal, N. Kumari, K. D. Diwate, K. C. Mohite, A. Bhattacharjee, Facile synthesis of SnO 2 thin film by spray pyrolysis technique, investigation of the structural, optical, electrical properties, Materials Today: Proceedings, Vol.-3, Issue No.-6, Page Nos -1609-1619, 2016. http://dx.doi.org/10.1016/j.matpr.2016.04.050


9.       D. Bhattacharjee, P. R. Alapati, A. Bhattacharjee, Molecular polarization, order parameter and dielectric study of a dimeric compound, Journal of Molecular Liquids, Vol.-224, Page Nos -507-514, 2016. http://dx.doi.org/10.1016/j.molliq.2016.10.029


10.    N. Kumari, A. Ghosh, A. Bhattacharjee, Influence of Cu doping on the structural, electrical and optical properties of ZnO, Pranama, Vol.-84, Issue No.-4, Page Nos -621-635, 2015. http://link.springer.com/article/10.1007/s12043-014-0851-1#/page-1


11.    A. Ghosh, N. Kumari, S. Tewari, A. Bhattacharjee, Structural, electrical and optical studies on ruthenium doped ZnO pellets for device applications, Materials Science and Engineering: B, Vol.-196, Page Nos -7-14, 2015. http://dx.doi.org/10.1016/j.mseb.2015.02.012


12.    D. Bhattacharjee, A. Bhattacharjee, Density and phase transition study of the liquid crystal compound 50.16, AIP Conference Proceedings (ICCMP 2015), Vol.-1661, Issue No.-1, Page Nos -110003, 2015. http://dx.doi.org/10.1063/1.4915448


13.    N. Kumari, A. Ghosh, S. Tewari, A. Bhattacharjee, Synthesis, structural and optical properties of Al doped SnO2 nanoparticles, Indian Journal of Physics, Vol.-88, Issue No.-1, Page Nos -65-70, 2014. http://link.springer.com/article/10.1007/s12648-013-0387-0#page-1


14.    A. Ghosh, N.Kumari, A. Bhattacharjee, Investigations on structural and optical properties of Cu doped ZnO, Journal of NanoScience and NanoTechnology, Vol.-2, Issue No.-1, Page Nos -485-489, 2014. http://indiasciencetech.com/index.php?journal=nanotechnology&page=article&op=view&path%5B%5D=118


15.    T.Devi, B. Choudhury, A Bhattacharjee, R Dabrowski, Study of optical parameters of two fluorinated isothiocyanato nematic liquid crystals exhibiting high birefringence, Opto-Electronics Review, Vol.-22, Issue No.-1, Page Nos -24-30, 2014. http://www.degruyter.com/view/j/oere.2014.22.issue-1/s11772-014-0171-5/s11772-014-0171-5.xml


16.    N. Kumari, A.Ghosh, A.Bhattacharjee, Investigation of structural and electrical properties of CuO modified SnO 2 nanoparticles, Materials Science in Semiconductor Processing, Vol.-19, Page Nos -114-123, 2014. http://www.sciencedirect.com/science/article/pii/S1369800113003776


17.    N. Kumari, A. Ghosh, A. Bhattacharjee, Investigation of structural and electrical transport mechanism of SnO2 with Al dopants, Indian Journal of Physics, Vol.-88, Issue No.-10, Page Nos -1059-1066, 2014. http://link.springer.com/article/10.1007/s12648-014-0514-6#/page-1


18.    K. D.Thingujam, P. R. Alapati, B. Choudhury, A. Bhattacharjee*, Optical studies of a liquid crystalline compound 6O.6, Liquid Crystals, Vol.-40, Issue No.-6, Page Nos -810-816, 2013. 10.1080/02678292.2013.783132


19.    N. Kumari, A. Ghosh, S. Tewari, A. Bhattacharjee, Structural, electrical and optical properties of sintered SnO 2 pellets, Materials Science in Semiconductor Processing, Vol.-16, Issue No.-3, Page Nos -905-914, 2013. http://www.sciencedirect.com/science/article/pii/S1369800113000279


20.    A. Ghosh, N. Kumari, S. Tewari, A. Bhattacharjee, Structural and optical properties of pure and Al doped ZnO nanocrystals, Indian Journal of Physics, Vol.-87, Issue No.-11, Page Nos -1099-1104, 2013. http://link.springer.com/article/10.1007/s12648-013-0346-9#page-1


21.    A. Ghosh, N. Kumari, S. Tewari, A. Bhattacharjee, Structural and optical properties of pure and Al doped ZnO nanocrystals, Indian Journal of Physics, Vol.-88, Issue No.-11, Page Nos -1099-1104, 2013.


22.    S. Tewari, A. Bhattacharjee, Structural, electrical and optical studies on spray-deposited aluminium-doped ZnO thin films, Pramana, Vol.-76, Issue No.-1, Page Nos -153-163, 2011. 10.1007/s12043-011-0021-7


23.    S. Tewari, A. Bhattacharjee, P.P. Sahay, Structural, dielectric, and electrical studies on thermally evaporated CdTe thin films, Journal of Materials Science, Vol.-44, Issue No.-4, Page Nos -534-540, 2008. 10.1007/s10853-008-3088-x


24.    A. Bhattacharjee, A.L.Verma, Degree of charge transfer in the mixed stack donor-acceptor charge transfer complex of C-18 TCNQ and TMB probed by laser Raman spectroscopy, Indian Journal of Physics, Vol.-79, Issue No.-9, Page Nos -1053-1057, 2005.


25.    B. Gogoi, A. Bhattacharjee, P.R. Alapati, A.L.Verma, Laser Raman studies on compounds 7. O4O. 7 and 7. O5O. 7, Liquid Crystals, Vol.-30, Issue No.-8, Page Nos -931-938, 2003. 10.1080/0267829031000136066


26.    A. Bhattacharjee, P.R. Alapati, A.L. Verma, A comparative study of the properties of the liquid crystalline compounds 5O. 5 and 5O. 6 in solid, solution and thin film forms by laser Raman spectroscopy, Liquid Crystals, Vol.-29, Issue No.-5, Page Nos -725-731, 2002. 10.1080/02678290210129911


27.    A.L.Verma, B. Zhao, A. Bhattacharjee, Y. Ozaki, Dynamics of electric-field-induced molecular reorientation of a surface-stabilized antiferroelectric liquid crystal in the smectic-C* phase probed by time-resolved infrared spectroscopy, Physical Review E, Vol.-63, Issue No.-5, Page Nos -051704, 2001. http://dx.doi.org/10.1103/PhysRevE.63.051704


28.    A. Bhattacharjee, P.R. Alapati, A.L. Verma, Dynamics of phase transitions in a liquid crystal probed by Raman spectroscopy, Liquid Crystals, Vol.-28, Issue No.-9, Page Nos -1315-1320, 2001. 10.1080/02678290110038201


 


Courses Taught


Previous/Other Semester/Year


·  Quantum Mechanics II, Spring Semester, 2016

·  Research Methodology, Spring Semester, 2016


 


Administrative Responsibility


1.       Dean (Research and Consultancy), from 11/07/2018

2.       TEQIP Coordinator, from 01/01/2017

3.       Chairman, Exam Cell, from Aug 2013 to July 2014

4.       Associate Dean (Research & Consultancy), from July 2014 -June 2017

5.       Chairman, Placement Committee, from Sept 2014 - May 2017


Students Supervised/Supervising


Ph.D


1.       Sujit Tewari, Ph.D, Studies on structural,electrical and optical properties of thin films of some II-VI semiconductors(CdTe, Cds, Zno), 2006-2009

2.       Thingujam Kiranmala Devi, Ph.D, Optical and dielectric studies on some liquid crystals and liquid crystalline binary mixtures, 2010-2013

3.       Navnita Kumari, Ph.D, Study of structural,electrical and optical properties of pure and doped SnO-2 nanoparticales, 2010-2013

4.       Arindam Ghose, Ph.D, Structural,electrical and optical studies of pure and doped ZnO pellets, 2011-2016


Projects


Sl No

Title of Project

PI

CO-PI

Funding Agency

Sanctioned Amount

StartYr - EndYr (Duration)

Status

Project Type

1

Studies on Orthoconic Antiferroelectric Liquid Crystals

Dr. Ayon Bhattacharjee

Prof P R Alapati

SERB-DST

1800000

2016-2018 (3 years)

Ongoing

Sponsored


Work Experience


1.       Lecturer, Department of Physics, St. Anthony's College, Shillong (May 2003 - Sept 2005)

2.       Assistant Professor, Department of Physics, National Institute of Technology Silchar, Assam (Oct 2005 - July 2013)


Additional Responsibility

Registrar (i/c), from 22/05/2017-08/01/2018