TY - JOUR
T1 - Light-scattering study in nematicsmectic-Asmectic-C multicritical mixtures
AU - Huang, Juyang
AU - Ho, John T.
PY - 1988
Y1 - 1988
N2 - Light scattering in the bend, splay, and bend-twist modes has been studied in two binary liquid-crystal systems exhibiting the nematicsmectic-Asmectic-C multicritical phase diagram. The results on the behavior of the longitudinal correlation length above the nematicsmectic-A transition are found to be in agreement with x-ray scattering data. The tilt susceptibility above the smectic-Asmectic-C transition is consistent with a simple mean-field description. The pretransitional behavior of the bend and splay elastic constants above the nematicsmectic-C transition in a pure material is found to follow the predictions of the Chen-Lubensky model. Near the multicritical point, the temperature dependence of the light-scattering intensity exhibits an anomalous minimum above the nematicsmectic-C transition in the bend and bend-twist modes but not in the splay mode. This behavior is not described by any existing model.
AB - Light scattering in the bend, splay, and bend-twist modes has been studied in two binary liquid-crystal systems exhibiting the nematicsmectic-Asmectic-C multicritical phase diagram. The results on the behavior of the longitudinal correlation length above the nematicsmectic-A transition are found to be in agreement with x-ray scattering data. The tilt susceptibility above the smectic-Asmectic-C transition is consistent with a simple mean-field description. The pretransitional behavior of the bend and splay elastic constants above the nematicsmectic-C transition in a pure material is found to follow the predictions of the Chen-Lubensky model. Near the multicritical point, the temperature dependence of the light-scattering intensity exhibits an anomalous minimum above the nematicsmectic-C transition in the bend and bend-twist modes but not in the splay mode. This behavior is not described by any existing model.
UR - http://www.scopus.com/inward/record.url?scp=0012245740&partnerID=8YFLogxK
U2 - 10.1103/PhysRevA.38.400
DO - 10.1103/PhysRevA.38.400
M3 - Article
AN - SCOPUS:0012245740
VL - 38
SP - 400
EP - 406
JO - Physical Review A - Atomic, Molecular, and Optical Physics
JF - Physical Review A - Atomic, Molecular, and Optical Physics
SN - 1050-2947
IS - 1
ER -