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题名: Monolayer dielectrics and generation of Maxwell-displacement current and optical second harmonics
作者: Iwamoto, M ;  Manaka, T ;  Zhong-Can, OY
刊名: IEEE TRANSACTIONS ON DIELECTRICS AND ELECTRICAL INSULATION
出版日期: 2004
卷号: 11, 期号:5, 页码:785-796
关键词: AIR-WATER-INTERFACE ;  2ND-HARMONIC GENERATION ;  ORIENTATIONAL ORDER ;  PHASE-TRANSITIONS ;  DIPOLE-MOMENTS ;  LANGMUIR MONOLAYERS ;  ROTATIONAL AVERAGES ;  LIQUID-CRYSTALS ;  FILMS ;  SURFACE
学科分类: Physics
通讯作者: Iwamoto, M , Tokyo Inst Technol, Dept Phys Elect, Meguro Ku, O Okayama 2-12-1 S2-33, Tokyo 1528552, Japan.
部门归属: Tokyo Inst Technol, Dept Phys Elect, Meguro Ku, Tokyo 1528552, Japan; Acad Sinica, Inst Theoret Phys, Beijing 100080, Peoples R China
英文摘要: Optical second harmonic generation (SHG) and Maxwell displacement current (MDC) spectroscopy for the exploration of the dielectric polarization phenomena in organic monolayer film are described. It is shown that MDC and SHG are generated from the monolayers due to their noncentrosymetric structure; the spontaneous polarization and the nonlinear polarization are the main contributions to the MDC and SHG, respectively. The developed MDC measurement coupled with the SHG measurement are shown to be helpful for the study of the orientation order and the phase transition of the monolayers, and thus helpful for the understanding of surface polarization phenomena. In order to show the effect of the SHG-MDC spectroscopy, the dielectric polarization of organic monolayer with C-infinity-symmetry is theoretically analyzed with a simple rod-like model. The spontaneous and nonlinear polarization induced in this modeled monolayer system is expressed in orientational order parameters defined by the thermodynamic averages of Legendre polynomials of the orientation angle. The experiments on the SHG and MDCs of mesogenic liquid crystal (LC) monolayers of 4'n-octyl-4-cyanobiphenyl (8CB) on the air-water interface are shown. Finally, piezoelectric effect and flexoelectric effect in monolayers are briefly discussed.
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000224490000005
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/13988
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:
Iwamoto, M,Manaka, T,Zhong-Can, OY. Monolayer dielectrics and generation of Maxwell-displacement current and optical second harmonics[J]. IEEE TRANSACTIONS ON DIELECTRICS AND ELECTRICAL INSULATION,2004,11(5):785-796.
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