首页> 外文期刊>Zeitschrift fur Physik, B. Condensed Matter >Azimuthal anchoring of nematic on undulated substrate: Elasticity versus memory
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Azimuthal anchoring of nematic on undulated substrate: Elasticity versus memory

机译:向列锚定在起伏衬底上的向列:弹性与记忆

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摘要

We measure the azimuthal anchoring energy of the nematic 5CB on sinusoidal holographic unidimensional and bidimensional gratings. We find that the anchoring strength is almost the same for all of the gratings and up to one order of magnitude stronger than expected by the topographic mechanism proposed by Berreman. We observe strong memory effects which dominate both the elastic anchoring and the easy axis gliding. We show that these memory effects limit from below the anchoring energy and are the main obstacle in the realization of substrates with weak anchoring conditions.
机译:我们在正弦全息一维和二维光栅上测量向列5CB的方位锚固能量。我们发现,所有光栅的锚固强度几乎相同,并且比Berreman提出的地形机制所期望的强度强多达一个数量级。我们观察到了强大的记忆效应,该效应主导着弹性锚固和易轴滑移。我们表明,这些记忆效应是从锚固能量以下限制的,并且是在锚固条件较弱的基材实现中的主要障碍。

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