Ultrasonic study of a smectic-B liquid crystal

S. Bhattacharya*, S. Y. Shen, J. B. Ketterson

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


Anisotropy in the velocity and attenuation of longitudinal ultrasound was studied for the first time in a stable smectic-B liquid crystal (β-methyl-butyl-methoxybenzylidene amino cinnamate). Anisotropy in the velocity was found to be consistent with the predictions of the Martin-Parodi-Pershan hydrodynamic theory in both smectic-A and -B phases, but was significantly smaller than when measured in the same material by Brillouin scattering. Furthermore, strong dispersion was observed near the smectic-A-smectic-B phase transition for sound propagating perpendicular to the symmetry direction.

Original languageEnglish (US)
Pages (from-to)1211-1218
Number of pages8
JournalPhysical Review A
Issue number3
StatePublished - 1979

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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