Excitation of Regular Convective Motions in Liquids and Liquid Crystals by an Acoustic Wave

被引：0
|
作者：
Minasyan, A. K. [1 ]
Hakobyan, M. R. [1 ]
Hakobyan, R. S. [1 ]
机构：
[1] Yerevan State Univ, Yerevan 375049, Armenia
来源：
JOURNAL OF CONTEMPORARY PHYSICS-ARMENIAN ACADEMY OF SCIENCES | 2011年 / 46卷 / 01期
关键词：
liquid; liquid crystal; acoustic wave; radiative pressure; convective motion; ULTRASOUND;
D O I：
10.3103/S1068337211010063
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
A possibility of exciting steady convective motions in isotropic and anisotropic liquids under the action of a force produced by the radiation pressure of an acoustic wave with a spatially periodic transverse intensity distribution is investigated theoretically and experimentally. Cells both with two rigid boundaries and with one free surface are studied. The flows lead to reorientation of the director of liquid crystal in the case of anisotropic liquid. As a result, it acquires a periodic distribution in the transverse plane. The phenomenon can be utilized for the imaging of acoustic fields of microwatt power.
引用
收藏
页码：26 / 33
页数：8
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