標題: Optics of light scattering caused by liquid-crystal-director fluctuations
作者: Chiang, Che-Wen
Yang, Kei-Hsiung
光電學院
College of Photonics
關鍵字: Nematic liquid crystal;light scattering;director fluctuations
公開日期: 2-Jan-2019
摘要: We have applied the light-scattering equation caused by liquid-crystal (LC)-director fluctuations as derived by De Gennes [1] to the case where the polarization direction of the incident light is at an arbitrary angle with respect to the LC directors within the cell. Based on the De Gennes's equation, we have used an out-of-plane (OPR) cell-rotation method to measure the pretilt angles of a tilted-homogeneously aligned LC cell. Our measured pretilt angles are in good agreement with that obtained by the published OPR-rotation method [2] based on a different mechanism. Our method is simple in setup and requires no complicated data-fitting calculations when the pretilt angles are below about 30 degrees. In addition, there is no need to know cell parameters except the ordinary and extraordinary refractive indices of the LC medium at the wavelength of incident light. [GRAPHICS] .
URI: http://dx.doi.org/10.1080/02678292.2018.1473647
http://hdl.handle.net/11536/148888
ISSN: 0267-8292
DOI: 10.1080/02678292.2018.1473647
期刊: LIQUID CRYSTALS
Volume: 46
起始頁: 108
結束頁: 113
Appears in Collections:Articles