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Phase transition studies in 50CB and 80CB

✍ Scribed by Professor P. Venkatacharyulu; Dr. A. V. N. Gupta; Dr. J. V. Rao; Sri. K. S. R. Prasad; Dr. N. V. L. N. Prasad

Publisher: John Wiley and Sons
Year: 1989
Tongue: English
Weight: 566 KB
Volume: 24
Category: Article
ISSN: 0232-1300
DOI: 10.1002/crat.2170240822

No coin nor oath required. For personal study only.

✦ Synopsis

Investigations on the temperature variation of specific volurnr and ultrasonic 1 elocitj are carried out t o study the pliase transitions i n the liquid crystals 4'-n-l'erltj loxj -4-Cyanobiplienyl (5OCB) and 4'-n-Oct~loxy-4-Cyanobip2ie~~~~l (SOCB). Froiii these studies various parameters like the adiabatic compressibility (Pad), molar sound 7 elocit5 or Rao number ( R J , molar compressibilitj ( R ) , Van d r r Waals constant ( b ) and the iuterrilolecular free lengths ( L ) are estimated us a function of temperature in tlie isotropic as well as in the niesophases. Finally tlie . ariation of tlie order paraiiteter witli tenrperature in the rieinatie phase is studied and the results are discussed.

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