Manipulation enhancement of terahertz liquid crystal phase shifter magnetically induced by ferromagnetic nanoparticles

doi:10.1039/c8nr09259a

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	Manipulation enhancement of terahertz liquid crystal phase shifter magnetically induced by ferromagnetic nanoparticles
	Y.Y.Ji; F.Fan; S.T.Xu; J.P.Yu; S.J.Chang
	2019
发表期刊	Nanoscale
ISSN	2040-3364
卷号	11 期号:11 页码:4933-4941
摘要	Ferromagnetic liquid crystals (FLCs), the suspensions of magnetic nanoparticles dispersed at different concentrations in liquid crystals (LCs), and their special magnetically induced birefringence characteristics have been investigated in the terahertz regime, mainly focusing on the interaction between magnetic cluster chains and LC molecules. We experimentally demonstrated the surface anchoring effect of the magnetic cluster chains on LC molecules in a mm-thick LC cell under an extremely weak external magnetic field (EMF), leading to a uniform anchoring arrangement of the LC molecules over the entire LC cell. Unlike pure 5CB LCs, the phase shift range of the FLCs at 1.45 THz up to pi (n(o) to n(e )or n(e) to n(o)) can be achieved over the whole tunable range by simply changing the magnitude of the EMF without changing its direction, and the optical axis of LC molecules can be controlled to rotate by 90 degrees, thereby realizing a tunable THz wave plate. This work provides a new way in the development of THz magneto-optic devices and phase devices.
关键词	Birefringence,wave,suspensions,Chemistry,Science & Technology - Other Topics,Materials Science
DOI	10.1039/c8nr09259a
URL	查看原文
收录类别	SCI ; EI
语种	英语
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/63312
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	Y.Y.Ji,F.Fan,S.T.Xu,et al. Manipulation enhancement of terahertz liquid crystal phase shifter magnetically induced by ferromagnetic nanoparticles[J]. Nanoscale,2019,11(11):4933-4941.
APA	Y.Y.Ji,F.Fan,S.T.Xu,J.P.Yu,&S.J.Chang.(2019).Manipulation enhancement of terahertz liquid crystal phase shifter magnetically induced by ferromagnetic nanoparticles.Nanoscale,11(11),4933-4941.
MLA	Y.Y.Ji,et al."Manipulation enhancement of terahertz liquid crystal phase shifter magnetically induced by ferromagnetic nanoparticles".Nanoscale 11.11(2019):4933-4941.

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