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Multifrequency ultrasonic investigations in the liquid crystal 5 OCB
Author(s) -
Gupta A. V. N.,
Rao J. V.,
Venkatacharyulu P.
Publication year - 1987
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.2170221019
Subject(s) - compressibility , intermolecular force , van der waals force , adiabatic process , ultrasonic sensor , thermodynamics , materials science , speed of sound , crystal (programming language) , van der waals equation , liquid crystal , volume (thermodynamics) , molar , chemistry , physics , molecule , acoustics , organic chemistry , geology , optoelectronics , computer science , programming language , paleontology
The specific volume and ultrasonic velocity measurements (at four different fixed frequencies) are carried out in the liquid crystal 4′‐n‐pentyloxy‐4‐cyanobiphenyl (5 OCB). From these studies various physical parameters like adiabatic compressibility, molar sound velocity, molar compressibility, van der Waals' constant and intermolecular free lengths are estimated. The variation of the order parameter at the four frequencies is also studied. The results are analysed.