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Research progress of cholesteric liquid crystals with broadband reflection characteristics in application of intelligent optical modulation materials 被引量:1
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作者 张兰英 高延子 +9 位作者 宋平 武晓娟 苑晓 何宝凤 陈兴武 胡望 郭仁炜 丁杭军 肖久梅 杨槐 《Chinese Physics B》 SCIE EI CAS CSCD 2016年第9期13-23,共11页
Cholesteric liquid crystals(CLCs) have recently sparked an enormous amount of interest in the development of soft matter materials due to their unique ability to self-organize into a helical supra-molecular architec... Cholesteric liquid crystals(CLCs) have recently sparked an enormous amount of interest in the development of soft matter materials due to their unique ability to self-organize into a helical supra-molecular architecture and their excellent selective reflection of light based on the Bragg relationship.Nowadays,by the virtue of building the self-organized nanostructures with pitch gradient or non-uniform pitch distribution,extensive work has already been performed to obtain CLC films with a broad reflection band.Based on authors' many years' research experience,this critical review systematically summarizes the physical and optical background of the CLCs with broadband reflection characteristics,methods to obtain broadband reflection of CLCs,as well as the application in the field of intelligent optical modulation materials.Combined with the research status and the advantages in the field,the important basic and applied scientific problems in the research direction are also introduced. 展开更多
关键词 cholesteric liquid crystals soft matter materials broadband reflection characteristics intelligent optical modulation materials
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Fundamentals of phase-only liquid crystal on silicon (LCOS) devices 被引量:38
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作者 Zichen Zhang Zheng You Daping Chu 《Light(Science & Applications)》 SCIE EI CAS 2014年第1期43-52,共10页
This paper describes the fundamentals of phase-only liquid crystal on silicon(LCOS)technology,which have not been previously discussed in detail.This technology is widely utilized in high efficiency applications for r... This paper describes the fundamentals of phase-only liquid crystal on silicon(LCOS)technology,which have not been previously discussed in detail.This technology is widely utilized in high efficiency applications for real-time holography and diffractive optics.The paper begins with a brief introduction on the developmental trajectory of phase-only LCOS technology,followed by the correct selection of liquid crystal(LC)materials and corresponding electro-optic effects in such devices.Attention is focused on the essential requirements of the physical aspects of the LC layer as well as the indispensable parameters for the response time of the device.Furthermore,the basic functionalities embedded in the complementary metal oxide semiconductor(CMOS)silicon backplane for phase-only LCOS devices are illustrated,including two typical addressing schemes.Finally,the application of phase-only LCOS devices in real-time holography will be introduced in association with the use of cutting-edge computer-generated holograms. 展开更多
关键词 electro-optic effect liquid crystal material liquid crystal on silicon device real-time holography
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