A Method for Indirectly Measuring the Second Sound Velocity in Smectic a Liquid Crystals |
| |
| Authors: | D G Gleed J R Sambles G W Bradberry |
| |
| Institution: |
a Thin Film and Interface Group, Department of Physics, University of Exeter, Exeter, England |
| |
| Abstract: | We present a simple method by which the variation of the hypersound velocity with the angle between the liquid crystal director and the scattering plane is fitted to theory. Combinations of bulk elastic constants can be obtained together with a value for the second sound velocity. This method is used to study the smectic A phase of 4-n-octyl-4'-cyanobiphenyl. We compare our results with previous work. |
| |
| Keywords: | |
| 本文献已被 InformaWorld 等数据库收录！ |
