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Racemic and chiral structures of banana-shaped smectic liquid crystals viewed as one-dimensional piezoelectric crystals
Wu, CX; Yamazaki, Y; Zhong-can, OY; Wu, CX , Xiamen Univ, Dept Phys, Xiamen 361005, Peoples R China.
2001
发表期刊JOURNAL OF CHEMICAL PHYSICS
ISSN0021-9606
卷号115期号:13页码:6204-6209
摘要A smectic liquid-crystal phase formed by achiral banana-shaped molecules (C-B2) is studied as one-dimensional piezoelectric crystals with fluidity of tilted-C-2V anisotropy in the other two spatial dimensions. Variation of the elastic-piezoelectric free energy of the system predicts the existence of racemic (R), left-, and right-handed chiral (H) antiferroelectric equilibrium structures, a result in agreement with the observation by Link [Science 278, 1924 (1997)]. The electric-field-induced ferroelectric state is shown to be a special C-2 symmetry, which confirms the measurements by optical second harmonic generation in a C-B2 by Macdonald [Phys. Rev. Lett. 81, 4408 (1998)]. The hysteresis loop of switching polarization is also discussed, and the molecular tilt angle dependence of spontaneous polarization is obtained as a function of the elastic and the piezoelectric constants. (C) 2001 American Institute of Physics.
部门归属Xiamen Univ, Dept Phys, Xiamen 361005, Peoples R China; Tohoku Univ, Inst Fluid Sci, Aoba Ku, Sendai, Miyagi 9808577, Japan; Tsing Hua Univ, Ctr Adv Study, Beijing 100084, Peoples R China; Acad Sinica, Inst Theoret Phys, Beijing 100080, Peoples R China
关键词Bent-core Molecules Ac Phase-change Achiral Molecules 2nd-harmonic Generation Spectroscopy Order
学科领域Physics
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收录类别SCI
WOS记录号WOS:000171015100055
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文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/13655
专题理论物理所1978-2010年知识产出
通讯作者Wu, CX , Xiamen Univ, Dept Phys, Xiamen 361005, Peoples R China.
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Wu, CX,Yamazaki, Y,Zhong-can, OY,et al. Racemic and chiral structures of banana-shaped smectic liquid crystals viewed as one-dimensional piezoelectric crystals[J]. JOURNAL OF CHEMICAL PHYSICS,2001,115(13):6204-6209.
APA Wu, CX,Yamazaki, Y,Zhong-can, OY,&Wu, CX , Xiamen Univ, Dept Phys, Xiamen 361005, Peoples R China..(2001).Racemic and chiral structures of banana-shaped smectic liquid crystals viewed as one-dimensional piezoelectric crystals.JOURNAL OF CHEMICAL PHYSICS,115(13),6204-6209.
MLA Wu, CX,et al."Racemic and chiral structures of banana-shaped smectic liquid crystals viewed as one-dimensional piezoelectric crystals".JOURNAL OF CHEMICAL PHYSICS 115.13(2001):6204-6209.
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