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Effects of dielectric relaxation on the dynamics and dielectric heating of nematic liquid crystals

机译:介电弛豫对向列液晶动力学和介电加热的影响

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摘要

We present recent experimental and theoretical results that link the phenomenon of dielectric relaxation in nematic liquid crystals to their fast electro-optical switching and to the problem of dielectric heating. We develop the theoretical model that allows one to relate director reorientation to the "history" of the electric field. We present an experiment that is well described by the proposed theory but which cannot be described within the classic model of an instantaneous response. We also analyze the effect of dielectric heating that is especially profound at the frequencies corresponding to dielectric relaxation.
机译:我们提供了最新的实验和理论结果,这些结果将向列型液晶中介电弛豫现象与其快速电光切换和介电加热问题联系在一起。我们开发了一种理论模型,该模型允许将导演的重新定向与电场的“历史”联系起来。我们提出了一个实验,该实验已被所提出的理论很好地描述了,但是在瞬时响应的经典模型中无法描述。我们还分析了电介质加热的影响,该影响在对应于电介质弛豫的频率上尤其深刻。

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