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VOLUME 47 (1988) | ISSUE 8 | PAGE 386
Study of the velocity and absorption of second sound in smectic liquid crystals
An acoustic method was used to measure, at a frequency of 3 MHz, the orientational dependence (0-90°) and the temperature dependence of the biasing impedance of smectic Л, С, B, F, and G mesophases of pentyloxybenzylidene hexyleniline. The orientational dependence of the absorption of orthogonal smectic mesophase was found to differ from that of the oblique smectic mesophase.