Department of Physics

University of North Bengal, India

Professor

Email: mandal_pradip@yahoo.com

Qualifications

1985 Ph.D., University of North Bengal, Liquid Crystals

1978 M.S., University of North Bengal, Physics

1975 B.S., ABN Seal College of North Bengal University, Physics

Publications (selected)

1. P.K. Mandal, A. Lapanik, R. Wipf, B. Stuehn, W. Haase, “Sub-hertz relaxation process in chiral smectic mixtures doped with silver nanoparticles”, App. Phys. Letts.,100, 2012, p 073112-1 to 073112-3.
2. D. Goswami, D. Sinha, A. Debnath, P.K. Mandal, S.K.Gupta, W. Haase, D. Ziobro and R. Dabrowski, “Molecular and dynamical properties of a perfluorinated liquid crystal with direct transition from ferroelectric SmC phase to isotropic phase”, J. Mol. Liquids, 182, 2013, p95-101.
3. S. Haldar, D. Sinha, P. K. Mandal, K. Goubitz& R. Peshar; “Effect of molecular conformation on the mesogenic properties of a partially fluorinated nematogenic compound investigated by X-ray diffraction and dielectric measurements”, Liquid crystals, 40, 2013, p689-698.
4. S. Haldar, K. C. Dey, D. Sinha, P. K. Mandal, W. Haase* and P.Kula, X-ray diffraction and dielectric spectroscopy studies on a partially fluorinated ferroelectric liquid crystal compound from the family of terphenyl esters, Liquid Crystals, 39, 2012 1196-1203.
5. D. Sinha, D. Goswami, P. K. Mandal, L.Szczucinski and R. Dabrowski, On the nature of molecular associations, static permittivity and dielectric relaxation in a uniaxial nematic liquid crystal, Mol.Cryst.Liq.Cryst., 562, 2012, 156-165.
6. S. Haldar, D. Sinha, D. Goswami, P. K. Mandal, K. C. Dey, A. Lapanik, Smectic layer spacing, average inter spontaneous polarization of room temperature FLC mixtures, Mol.Cryst.Liq.Cryst., 547, 2011, 25-32.
7. S. Haldar, S. Barman, P. K. Mandal, W. Haase and R. Dabrowski, Influence of molecular core structure and chain length on the physical properties of nematogenic fluorobenzene derivatives, Mol.Cryst.Liq.Cryst., 528, 2010, 81-95.
8. S. Haldar, P K Mandal, S J Pratap, TN Guru Row & R. Dabrowski, Structural analysis by X-ray diffraction of A polar mesogen 4-cyanophenyl-4’-heptyl- biphenyl carboxylate, Mol.Cryst.Liq.Cryst., 503, 2009, 99 – 111.
9. B R Jaishi, P K Mandal, R. Dabrowski, Studies on binary mixtures 4-pentyl-4’- cyanobiphenyl withthree 4,4’-di(alkoxy) azoxybenzenes, Opto-electronic Review, 18(2), 2010, 111-120.
10. P. Das, A. N. Biswas S. Acharya,  A. Choudhury, P. Bandyopadhyay, P. K. Mandal, S. Upreti, Structure of liquid crystalline 1-phenyl-3-{4-[4-(4-octyloxybenzoyloxy)phenyloxy- carbonyl]phenyl}triazene-1-oxide at low temperature, Mol. Cryst. Liq. Cryst., 501, 2009, 53-61.
11. P K Mandal, S. Haldar, A Lapanik, W. Haase, Induction and enhancement of ferroelectric, SmC* phase in multi-component room, temperature mixtures, Jpn. J Appl. Phys., 48, 2009, 011501-6.
12. Mandal Pradip, Haldar Sripada, Prathap S. J., Guru Row T. N., Haase Woolfgang, X-ray studies in the crystalline and nematic phases of  4'– (3, 4, 5 – trifluoro – phenyl) - 4 – Propyl – bicyclohexyl, Liquid Crystals, 35, 2008, 1307-1312.
13. S. Haldar, S Biswas, P. K. Mandal, K. Goubitz, H. Schenk & W. Haase, X-ray structural analysis in the crystalline Phase of a nematogenic fluorophenyl compound, Mol. Cryst. Liq. Cryst., 490, 2008, 80-87.
14. Purak Das, A N Biswas, S Acharya, A. Chaudhury, P. Bandyopadhay & P K Mandal, Liquid crystalline aryltriazene-1-oxides with two ester units: synthesis, characterization, structure and thermal properties, Liquid Crystals, 35(7), 2008, 895-903.
15. Purak Das, A N Biswas, P. Bandyopadhyay & P K Mandal, Synthesis and Liquid Crystalline properties of Novel Triazene-1-oxide derivatives, Mol.Cryst.Liq. Cryst., 490, 2008, 3-15.

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