Dual nature of the orientational effect of ultrasound on liquid crystals
- 作者: Kapustina O.1
-
隶属关系:
- Andreyev Acoustics Institute
- 期: 卷 62, 编号 5 (2017)
- 页面: 745-752
- 栏目: Liquid Crystals
- URL: https://journals.rcsi.science/1063-7745/article/view/191320
- DOI: https://doi.org/10.1134/S1063774517050091
- ID: 191320
如何引用文章
详细
The new model of thresholdless distortion of the orientational structure in a homeotropic layer of nematic liquid crystal with free ends in ultrasonic field has been experimentally substantiated for the first time. The model is constructed within the concepts of nonequilibrium thermodynamics and statistical hydrodynamics of liquid crystals for the frequency range in which the elastic and viscous wavelengths are, respectively, longer and shorter than the layer thickness. The main regularities of the phenomenon, which relate the conditional effect threshold to the ultrasonic frequency and layer thickness, have been established based on the experimental data for (20–150)-μm-thick layers in the frequency range of 0.1–9 MHz. These data are compared with the results of numerical calculations, performed taking into account two mechanisms of liquid crystal structure distortion (convective and nonlinear relaxation ones).
作者简介
O. Kapustina
Andreyev Acoustics Institute
编辑信件的主要联系方式.
Email: oakapustina@yandex.ru
俄罗斯联邦, Moscow, 117036