Dr. Biswanath Jha, Reader
bj.phys@presidencycollegekolkata.ac.in
Area of Specialisation: Electronics, Liquid Crystals   

Academic Profile
M.Sc., North Bengal University
Ph.D., North Bengal University, 1983-84

Areas of Research
Design of X-ray camera for the study of liquid crystals in magnetic field different temperatures.

Preparation of binary Mixture for enhancement of some mesomorphic range and study its physical properties.

Design of a dielectric cell and measurement of dielectric anisotropics in the nematic phase of some liquid crystals at different temperatures.

X-ray diffraction studies on some liquid crystals in different mesomorphic phases and determination of order parameters.

Research Group
Former Members
Professor Ranjit Paul, Dr. Shukla Paul, Dr. Basana Bhattacharjee, Smt. Aparna Nandi, Prof. Pradip Kr. Mandal, Prof. D. Dunmur & Dr. Malay Kr. Das.

Publications
A design for High Temperature x-ray camera for the study of Liquid crystals in Magnetic field – Proc. Nucl. Phys. Solid State symp 19c (1976)

The structure of the Mesophase of cholesterol esters Proc. Nucl. Phys. Solid state phys. Symp.19c ( 1976)

The structure of cholestryl Propionate in Mesomorphic State- Mol. Cryst. Liq-cryst. 48 (1978)

X-ray diffraction studies on the mesophase of n-p- cyanobenzy lideno- p- octyloxy aniline in magnetic field: Phys. State. Solidi. (a) 76, (1983)

Orientational Distribution Function and Order Parameter for 5-(4-n-Butyl phenyl) -2-(4-cyanophyl) – pyrimidine: Mol Cryst. Liq Cryst. 104 (1984)

Order parameters of some Homologous cybolactic nematics from x-ray diffraction measurements phase transitions ; 15, (1989)

Physical properties of the smeetic phase of Liquid Crystal mixture BDH 6040: Proc. Solid State. Phys. Symp. , 32c , 265(1989)

Order parameter and densities in smeetic C, smeetic A and nematic phase of a Liquid crystal mixture; Liq. Cryst. 13, 629 (1993)

Phase Transition and physical propertics of a Binary Mixture showing enhanced smeetic phase (Proc.of the 15th. International Liquid cryst. Conference , appeared in sp. Volume); Mol. Cryst. Liq.Cryst. 261, 95-106 (1995)