Acoustic Detection of a Propagating Shear Wave in a Smectic-Liquid Crystal
- 30 March 1981
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 46 (13), 828-831
- https://doi.org/10.1103/physrevlett.46.828
Abstract
The propagating shear wave ("second sound") in a smectic- liquid crystal was detected by an acoustic shear impedometric technique. The anisotropy of shear-wave velocity was determined, for the first time, in its entirety. The viscous-damped nature of the mode for propagation parallel and perpendicular to the normal to the smectic layer was also determined. The results confirm the predictions of the elasto-hydrodynamic theory of the smectic- liquid crystal.
Keywords
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