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arXiv 1507.04510cond-mat.soft
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胆甾相液晶的润湿

Wetting of cholesteric liquid crystals

Nuno M. Silvestre, Maria Carolina Figueirinhas Pereira, Nelson R. Bernardino, Margarida M. Telo da Gama

摘要:

从理论上研究了胆甾相液晶在平面衬底上的润湿特性。如果基片和界面的性质使得双折射层不变形,则润湿性质类似于双折射液晶的润湿性质。另一方面,如果锚定条件迫使液晶层变形,则润湿性质改变,自由胆甾-各向同性界面是非平面的,并且存在靠近基板的拓扑缺陷层。根据胆甾相液晶的性质,这些变形可以促进或阻碍衬底被润湿。

英文摘要:

We investigate theoretically the wetting properties of cholesteric liquid crystals at a planar substrate. If the properties of substrate and of the interface are such that the cholesteric layers are not distorted the wetting properties are similar to those of a nematic liquid crystal. If, on the other hand, the anchoring conditions force the distortion of the liquid crystal layers the wetting properties are altered, the free cholesteric-isotropic interface is non-planar and there is a layer of topological defects close to the substrate. These deformations can either promote or hinder the wetting of the substrate by a cholesteric, depending on the properties of the cholesteric liquid crystal.

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