TY - JOUR
T1 - Pre-transitional effects in a nematic and a polymesomorphic liquid crystal
AU - George, A. K.
AU - Padmini, A. R.K.L.
N1 - Funding Information:
This work was supportedb y the University Grants Commission, New Delhi, India.
PY - 1982/11
Y1 - 1982/11
N2 - Measurements of ultrasonic velocity V, specific volume v and adiabatic compressibility Kad are carried out in a monotropic nematic liquid crystal, p-anisal-p-phenetidine (pApP), and a polymesomorphic liquid crystal, p-n-decyloxybenzoyl-p-cresol (DBC) with nematic and smectic A phases. Temperature variation of the order parameter is estimated. The pre-transitional effects observed in v and Kad are discussed on the basis of de Gennes' theory generalized by Bendler, and the critical exponents are estimated.
AB - Measurements of ultrasonic velocity V, specific volume v and adiabatic compressibility Kad are carried out in a monotropic nematic liquid crystal, p-anisal-p-phenetidine (pApP), and a polymesomorphic liquid crystal, p-n-decyloxybenzoyl-p-cresol (DBC) with nematic and smectic A phases. Temperature variation of the order parameter is estimated. The pre-transitional effects observed in v and Kad are discussed on the basis of de Gennes' theory generalized by Bendler, and the critical exponents are estimated.
KW - liquid crystals
KW - pre-transitional effects
KW - ultrasonics
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U2 - 10.1016/0041-624X(82)90048-8
DO - 10.1016/0041-624X(82)90048-8
M3 - Article
AN - SCOPUS:0020207368
VL - 20
SP - 271
EP - 274
JO - Ultrasonics
JF - Ultrasonics
SN - 0041-624X
IS - 6
ER -