Study of intrinsic anchoring in nematic liquid crystals based on modified Gruhn-Hess pair potential

	Study of intrinsic anchoring in nematic liquid crystals based on modified Gruhn-Hess pair potential
其他题名	论文其他题名
	Zhang Z. D.; Zhang Y. J.
	2008
发表期刊	Physics Letters A
ISSN	0375-9601
卷号	372 期号:4 页码:498-509
摘要	A nematic liquid crystal slab composed of N molecular layers is investigated using a simple cubic lattice model, based upon the molecular pair potential which is spatially anisotropic and dependent on elastic constants of liquid crystals. A perfect nematic order is assumed in the theoretical treatment, which means the orientation of the molecular long axis coincides with the director of liquid crystal and the total free energy equals to the total interaction energy. We present a modified Gruhn-Hess model, which is relative to the splay-bend elastic constant K-13. Furthermore, we have studied the free nematic interfacial behavior (intrinsic anchoring) by this model in the assumption of the perfect nematic order. We find that the preferred orientation at the free interface and the intrinsic anchoring strength change with the value of modification, and that the director profile can be determined by the competition of the intrinsic anchoring with external forces present in the system. Also we simulate the intrinsic anchoring at different temperatures using Monte Carlo method and the simulation results show that the intrinsic anchoring favors planar alignment and the free interface is more disordered than the bulk. (C) 2007 Elsevier B.V. All rights reserved.
收录类别	SCI
语种	英语
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/24862
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Zhang Z. D.,Zhang Y. J.. Study of intrinsic anchoring in nematic liquid crystals based on modified Gruhn-Hess pair potential[J]. Physics Letters A,2008,372(4):498-509.
APA	Zhang Z. D.,&Zhang Y. J..(2008).Study of intrinsic anchoring in nematic liquid crystals based on modified Gruhn-Hess pair potential.Physics Letters A,372(4),498-509.
MLA	Zhang Z. D.,et al."Study of intrinsic anchoring in nematic liquid crystals based on modified Gruhn-Hess pair potential".Physics Letters A 372.4(2008):498-509.

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