近晶相液晶的连续体理论(英文)  

CONTINUUM DESCRIPTION OF SMECTIC LIQUID CRYSTALS

作　　者：蒋敏 米谷唯善 冈田裕之 女川博义 马凯[2] 黄锡珉[2] 

机构地区：[1]日本国富山大学工学部 [2]中国科学院长春物理研究所

出　　处：《液晶与显示》1998年第4期242-250,共9页Chinese Journal of Liquid Crystals and Displays

摘　　要：从层变形是分子间作用结果的观点考虑，依据近晶相液晶的对称性，推导出了一种新的近晶相连续体理论，与Ｇｅｎｎｅｓ理论不同，该理论用分子指向矢ｎ→来描述液晶的自由能，从而使理论表述从物理上讲更易理解。最后给出证明，论证这两种表述在本质上是可互换的。Based on the concept that the layer deformation in smectic liquid crystals should be a combination of the molecular interaction, a new expression of continuum theory for smectic C liquid crystals is derived out with the consideration of the symmetry breaking in the nematic smectic phase transition, which employs molecular director n→ rather than C director or layer normal that are used to describe the layer deformation in Gennes continuum theory In comparison with previous expression, the transformation between these two expressions is performed with a proper explanation of the parameters B i, B ij , A ij , C i and D i used in previous theory, which are proved to be correlated with each other and can be expressed by elastic constants of smectic liquid crystal material

关 键 词：近晶相液晶 连续体 从层变形 自由能 对称性 

分 类 号：O753.2[理学—晶体学]