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Orientation Phenomena in Nematic Liquid Crystals under a Periodic Compressional Deformation

机译：周期性压缩变形下向列液晶的取向现象

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摘要

The orientation behavior of homogeneous planar layers of nematic liquid crystals with open and closed ends in the field of compressional deformations caused by an acoustic effect is studied. The mechanisms determining the connection of the optical response of a nematic liquid crystal (the variable component of an optical signal and its spectrum) with the acoustic parameters (the oscillation amplitude and frequency, and the amplitude of sound pressure) and the layer thickness are revealed. The factors responsible for the mechanism and modes of acoustooptic conversion are considered. It is demonstrated that, by varying the layer thickness, it is possible to implement different modes of signal conversion. The possibility of designing a new modification of a sound receiver based on a nematic liquid crystal and the specific features of this design are discussed. Its advantages over conventional sound pressure receivers based on nematic liquid crystals are indicated, in particular, the absence of limitation of the frequency of the received signal in the low-frequency range.
机译：研究了由声效应引起的压缩变形领域中，具有开端和闭端的向列型液晶的均匀平面层的取向行为。揭示了确定向列型液晶的光响应（光信号及其频谱的可变分量）与声学参数（振荡幅度和频率以及声压幅度）和层厚之间的关系的机制。 。考虑了引起声光转换机理和模式的因素。已经证明，通过改变层厚度，可以实现信号转换的不同模式。讨论了设计一种基于向列型液晶的声音接收器的新变型的可能性以及该设计的具体特征。相对于基于向列型液晶的常规声压接收器，其优点尤其是在低频范围内对接收信号的频率没有限制。

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