Electric field-induced acoustic-optic mode coupling in an anticlinic liquid crystal
A dc electric field was applied perpendicular to the tilt plane of a pitch-compensated (unwound helix) anticlinic liquid crystal. By means of quasielastic light scattering, the field was found to couple the acoustic and optic Goldstone modes, resulting in an increase of the relaxation time tau(beta) of the acousticlike eigenmode. Elastic constants were estimated from the relaxation time data.
Zhang
S
Department of Physics, Case Western Reserve University, Cleveland, Ohio 44106, USA.
Keast
SS
Neubert
ME
Petschek
RG
Rosenblatt
C