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Srinivasarao, Mohan

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Raman Scattering Study of Phase Biaxiality in a Thermotropic Bent-Core Nematic Liquid Crystal

2010-07 , Park, Min Sang , Yoon, Beom-Jin , Park, Jung Ok , Prasad, Veena , Kumar, Satyendra , Srinivasarao, Mohan

Polarized Raman spectroscopy was used to investigate the development of orientational order and the degree of phase biaxiality in a bent-core mesogenic system. The values of the uniaxial order parameters < P-200 > and < P-400 >, and biaxial order parameters < P-220 >, < P-420 >, and < P-400 >, and their evolution with temperature were determined. The temperature dependence of almost all order parameters reveals a second order transition from the uniaxial to biaxial nematic phase with < P-220 > increasing to similar to 0.22 before a first order transition to the smectic-C phase, upon cooling.

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The Evolution Study Of Thin Film Structure During The Film Formation

2010-01 , Park, Min Sang , Aiyar, Avisheck , Park, Jung Ok , Reichmanis, Elsa , Srinivasarao, Mohan

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