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题名: Anomalous anchoring effect of nanopolyimide Langmuir-Blodgett films in a twisted nematic liquid-crystal cell
作者: Sugimura, A ;  Matsumoto, K ;  Zhongcan, OY ;  Iwamoto, M
刊名: PHYSICAL REVIEW E
出版日期: 1996
卷号: 54, 期号:5, 页码:5217-5220
关键词: INTERFACE
学科分类: Physics
通讯作者: Sugimura, A , OSAKA SANGYO UNIV,DEPT INFORMAT SYST ENGN,3-1-1 NAKAGAITO,DAITO,OSAKA 574,JAPAN.
部门归属: ACAD SINICA,INST THEORET PHYS,BEIJING 100080,PEOPLES R CHINA; TOKYO INST TECHNOL,DEPT PHYS ELECT,MEGURO KU,TOKYO 152,JAPAN
英文摘要: In a recent paper [Phys. Rev. E 52, 681 (1995)] we showed that in the absence of an external field, the twisted structure of substrates with weak anchoring can induce a deviation of the director at the surfaces from the easy axis and that the anchoring energy can be evaluated by measuring this deviation. To test the prediction, the anchoring energy for nematic 4-pentyl-4'-cyanobiphenyl and polyimide Langmuir-Blodgett (LB) substrates with thicknesses in a range less than 10 nm has been measured. The anchoring energy is found to increase and saturate with the number of LB layers. This result, unlike that expected for the isotropic van der Waals interaction, reveals the anomalous anisotropic interfacial tension between a liquid-crystal slab and polyimide LB films with nanometer thickness. The generalized nonretarded van der Waals energy for the chain-chain interaction is proposed to explain the experimental result.
收录类别: SCI
原文出处: 查看原文
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/12564
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Recommended Citation:
Sugimura, A,Matsumoto, K,Zhongcan, OY,et al. Anomalous anchoring effect of nanopolyimide Langmuir-Blodgett films in a twisted nematic liquid-crystal cell[J]. PHYSICAL REVIEW E,1996,54(5):5217-5220.
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