Aloke Kumar Chakraborty has done post-doctoral research in the field Nano Science at the Indian Association for the Cultivation of Science (IACS), Kolkata, India. He obtained Ph.D. (Science) from Jadavpur University, Kolkata, India on the basis of experimental research in the field of Condensed Matter Physics (Organometallic Semiconductor) at the Indian Association for the Cultivation of Science (IACS), Kolkata, India. He obtained B.Sc. (Honours) & M.Sc. in Physics from Rajshahi University, Bangladesh. He completed Higher Secondary education from Government Edward College, Pabna and Secondary School education from Chatmohar Raja C.N. & Babu S.N. High School, Pabna.

Dr. Chakraborty served Postgraduate, Engineering colleges in various capacities, (such as Lecturer, Assistant Professor, Associate Professor, Professor and Departmental Head) under the Ministry of Education, Government of Bangladesh. He also worked as Professor & Head of the Department of Computer Science in BGC Trust University, Chittagong, Bangladesh.
He obtained Gold Medal as Best Teacher award from the Ministry of Education. He has a good number of research publications in reputed international scientific journals to his credit.
He has also industrial experience as honorary advisor/consultant in Research & Development (R & D) section with the application skill of Nano technology in developing the quality of computer printing ink.

 

Post-Doctoral Research: Nanoscience/ Nanotechnology
Postdoctoral Research at the Department of Spectroscopy, Indian Association for the Cultivation of Science (IACS), Jadavpur, India.

Ph.D. (Science): Field – Condensed Matter Physics
Degree awarded by Jadavpur University, Kolkata, India (Ph.D.awarded on the basis of experimental research work Pursued at the Department of Spectroscopy, Indian Association for the Cultivation of Science (IACS), Jadavpur, India).

M.Sc. (Physics)
University of Rajshahi, Bangladesh.
B.Sc. [Honours] (Physics);
University of Rajshahi, Bangladesh.
Higher Secondary Certificate Examination (H.S.C.) 1970; Rajshahi Board; Government Edward College, Pabna.
Secondary School Certificate (SSC): 1968; Rajshahi Education Board; Chatmohar Raja C.N. & Babu S. N. High School, Pabna.

 

Awards:
Obtained national award (Gold Medal) in 2004 from Ministry of
Education, Govt. of Bangladesh as the best teacher in Physics.
Ph.D. Scholarship offered by:
The Indian Council for the Cultural Relations (ICCR), New Delhi, India.

 

RESEARCH INTEREST:
Postdoctoral Research
Nanoscience/ Nanotechnology
Synthesis of silver and cadmium sulphide (CdS) nano particles, their dispersion in to polymer matrix and dispersion of organometallic materials in to polymer matrix; preparation of nanostructures of polymer varying in size and shape using some optical techniques.
Characterization of the nanocomposites in solution and in polymer matrix by UV-Vis and FTIR spectroscopy, FESEM, TEM, XRD, TGE, DSC, as required.
Behavior of electrical conductivity in dark and under illumination of the nanocomposites dispersed polymer films were studied in dark as well as under the illumination of monochromatic irradiations. Charge density waves (CDW) were observed in Ag nano dispersed polymer film.

 

Ph.D. Research
Research Supervisor: Professor Dr. Biswanath Mallik,
Department of Spectroscopy, Indian Association for the Cultivation of Science (IACS), Jadavpur, India.
Ph.D. research work in experimental condensed matter Physics embodied the
Dark and Photoconductive properties of some Organometallic compounds
(Ferrocene and some of its derivatives) under various experimental conditions.
Title of the thesis: Investigations on the Dark and Photoconductive
Properties of Some Organometallic Compounds;
The dark & photoconductivity behavior and possible phase transition of ferrocene (organometallic sandwich compound) & some of its derivatives in dry state as well as various organic vapor adsorbed state with varying dc bias.
Dark current oscillations in low frequencies in some organic vapor adsorbed state of the ferrocene (and some of its derivatives) controlled by the applied dc bias voltage resulting from possible surface phase transition of the materials.

Photoinduced desorption of adsorbates from the solid surface of ferrocene & some of its derivatives and photoconductive properties of these materials in pure and dry state.

Anomalous photoconductivity behaviour of these materials at different constant temperatures using powdery material in a sandwich type of cell configuration in the dry and pure state with the exposure of a polychromatic light source.

Research Publications:
List of Publications in internationally reputed journals attached

Experiences:
(a) Research & Teaching

Ph.D. and Postdoc level Research; teaching Physics in various levels of postgraduate & undergraduate studies, like Engineering, B.Sc. (Honours) and M.Sc., for more than 30 years.
(b) Industrial:

Advisor/consultant in R & D in an industry in India: Sulekha Works Ltd., Kolkata, INDIA. Development of quality of computer printing ink using the techniques of nanotechnology.

LIST OF PUBLICATIONS OF Dr. Aloke Kumar Chakraborty.
(1). OrganometallicPhotoconductors: Dark and Photoconductive Studies on Ferrocene and Some of its
Derivatives; Aloke Kumar Chakraborty, Ashis Bhattacharje and Biswanath Mallik; Bull.Chem.Soc.Jpn., 67 (1994) 607.
(2). Anomalous Photoconductivity of Ferrocene; Aloke Kuma Chakraborty and Biswanath Mallik; Synth.Met., 73 (1995) 239
(3). Photoinduced Desorption of Ethanol Vapor from Ferrocene Solid Surface Monitored by Electrical Current Measurements;
Aloke Kumar Chakraborty and Biswanath Mallik; Jpn.J.Appl. Phys.; 34 (1995) 6195
(4). Low-frequency Electrical Current Oscillations in Vapor-adsorbed Ferrocene; Biswanath Mallik and Aloke Kumar Chakraborty; J.Phys.Chem.; 100 (1996) 2145.
(5). Low-frequency Electrical Current Oscillations in the Vapor-adsorbed State of Some Ferrocene Derivatives;
Biswanath Mallik and Aloke Kumar Chakraborty; J.Chem.Soc., Faraday Trans., 93 (20), ( 1997 ) 3677.
(6). Studies on the Photoinduced Desorption of Ethanol Vapor from the Solid Surface of Some Ferrocene Derivatives; Biswanat
Mallik and Aloke Kumar Chakraborty; Phys.Stat.Sol(a)., 163 (1997) 395.
(7). Observation of low-frequency Electrical Current Oscillations in Ferrocene Sample With Adsorbed 2-propanol Vapor; Aloke Kumar Chakraborty and Biswanath Mallik; Solid State Com.,104( 1997 ) 473
(8). Dark and Photoconductive Properties of Hydroxymethyl-ferrocene ;Aloke Kumar Chakraborty, Raghu Nath Bera, Ashis Bhattacharjee and Biswanath Mallik; Synth.Met., 97 (1998) 63 .
( 9). Photoinduced Desorption in Ferrocene-ethanol Vapor System Using Polychromatic Light Source: Dependence on Light Intensity; Aloke Kumar Chakraborty, Raghu Nath Bera and Biswanath Mallik; Synth.Met., 92 (1998) 17.
(10). Photoinduced Anomalous Current Changes in Some Organometallic Materials; Aloke Kumar Chakraborty and Biswanath Mallik; Current Appl. Phys., 9 (2009) 1079-108
(11). Kinetics of Unusual Photoinduced Currents in the Solid State of Some Ferrocene Derivatives; Aloke Kumar Chakraborty and Biswanath Mallik; Indian J. Phys.; 183 (2009) 291-300. Mallik; Indian J. Phys.; 183 (2009) 291-300.
(12). Silver Nanoparticles Dispersed in Poly (methyl methacrylate) Films: Spepctroscopic and Electrical properties; Manisree Majumder, Aloke Kumar Chakraborty and Biswanath Mallik; CP1147 Transport and Optical Properties of Nanomaterials: ICTOPON-2009; P.269-274. Conference Proceedings of American Institute of Physics (AIP).
(13). Study of Quantum Yields and Photoluminescence of Thiol Capped CdS Nanocrystallites; Manisree Majumder, Santanu Karan, Manik Kumar Sanyal, Aloke Kumar Chakraborty and Biswanath Mallik; CP1147 Transport and Optical Properties of Nanomaterials: ICTOPON-2009; P.145-151.Conference Proceedings of American Institute of Physics (AIP).
(14). Synthesis of Thiol Capped CdS Nanocrystallites Using Microwave Irradiation and Studies on Their Steady State and Time Resolved Photoluminescence; Manisree Majumder, Santanu Karan, Aloke Kumar Chakraborty and Biswanath Mallik; Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy; 76 (2010) 115-121.
(15). Photoluminescence Studies on Nanostructured Cadmium Sulfide Thin Films Prepared by Chemical Bath Deposition Method and Annealed at Different Temperatures; Manisree Majumder, Aloke Kumar Chakraborty and Biswanath Mallik; Journal of Luminescence; 130 (2010)1497-1503.
(16). Indication of formation of charge density waves in silver Nanoparticles dispersed poly(methyl methacrylate) thin films; Manisree Majumder, Aloke Kumar Chakraborty, Bipul Biswas, Avijit Chowdhury and Biswanath Mallik; Synth.Met. 161 (2011) 1390– 1399.
(17). Surface electrical conductivity of poly (methyl methacrylate) thin films:observation of conductivity switching; Bipul Biswas, Aloke Kumar Chakraborty, Manisree Majumder, Avijit Chowdhury, Manik Kr.Sanyal and Biswanath Mallik; Synth.Met. 161 (2012) 2632– 2637.
(18) Studies on the photoswitching property of vinylferrocene-doped poly(methyl methacrylate) thin films; Manik Kumar Sanyal, Bipul Biswas, Manisree Majumder, Aloke Kumar Chakraborty, Avijit Chowdhury, Biswanath Mallik; Phys. Express, 4 (2014) 19.

Conference paper/poster presented
(1). Spectroscopic Investigation on the Photoinduced Charge Transfer between Vinyl Ferrocene and Chloroform Molecules in Solution Phase as well as in Polymer Thin Films: Manisree Majumder, Aloke Kumar Chakraborty and Biswanath Mallik; Poster Presentation : National Symposium on Radiation and Photochemistry (NSRT) 2009; March 12-14, 2009; Organized by Kumaun University, Nainital, India.
(2). Studies on the Effects on Annealing on the Photoluminiscence Properties of Nanostructured Cadmium Sulfide Thin Films Prepared by Chemical Bath Deposition Technique; Manisree Majumder, Aloke Kumar Chakraborty and Biswanath Mallik; Poster Presentation: One day Seminar on “Recent Trends in the Research on Atomic, Molecular and Optical (AMO) Physics”: March 17, 2010; Organized by Indian Physical Society, held at Indian Association for the Cultivation of Science (IACS), Jadavpur, Kolkata-700032, India.
(3). Silver nanoparticles-dispersed poly (methyl methacrylate) thin films:indication of charge density waves; Manisree Majumder, Aloke Kumar Chakraborty, Bipul Biswas, Avijit Chowdhury and Biswanath Mallik; Poster presentation: International Conference on Multifunctional Materials (ICMM-2010); organized by Physics Department, Banaras Hindu University; Varanasi, India; 6-9 December, 2010. (4). Observation of conductivity switching in surface electrical conductivity of Poly(methylmethacrylate) thin film: Bipul Biswas, Aloke Kumar Chakraborty, Manisree Majumder, Avijit Chowdhury, Manik Kumar Sanyal, Biswanath Mallik; Poster presentation: National conference on sustainable development through innovative research in science &technology; held at Jadavpur University, Kolkata- 700032; September 28-29, 2012.