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	Tunable metamaterials based on nematic liquid crystals
	Zhao, Qian ; Kang, Lei ; Du, Bo ; Li, Bo ; Zhou, Ji
	2010-05-10 ; 2010-05-10
会议名称	Piers 2007 Beijing: Progress in Electromagnetics Research Symposium, Pts I and II, Proceedings ; Progress in Electromagnetics Research Symposium (PIERS 2007) ; Beijing, PEOPLES R CHINA ; Web of Science
关键词	PHOTONIC-BAND-GAP REFRACTION Engineering, Electrical & Electronic
中文摘要	Electrically tunable negative permeability metamaterial consisting of periodic array of split ring resonators (SRRs) infiltrated with nematic liquid crystals is demonstrated. Transmission measurement shows that the transmitted resonance dip of the metamaterial shifts towards low frequency as the applied electric field increases. The maximum shift is about 210 MHz and the shift can be continuously and reversible adjusted. Numerical simulation shows that the permeability of the metamaterial is negative near the resonance frequency and the frequency range with negative permeability can be dynamically adjusted and widen about 200 MHz by the applied electric field. An applied electric field changes the alignment of the liquid crystal directors and hence the dielectric constant of the structure, which permits dynamically tuning the negative permeability and provides a convenient means to add adaptive features to the metamaterials.
会议录出版者	ELECTROMAGNETICS ACAD ; CAMBRIDGE ; 777 CONCORD AVENUE, STE 207, CAMBRIDGE, MA 02138 USA
语种	英语 ; 英语
内容类型	会议论文
源URL	[http://hdl.handle.net/123456789/18469]
专题	清华大学
推荐引用方式 GB/T 7714	Zhao, Qian,Kang, Lei,Du, Bo,et al. Tunable metamaterials based on nematic liquid crystals[C]. 见:Piers 2007 Beijing: Progress in Electromagnetics Research Symposium, Pts I and II, Proceedings, Progress in Electromagnetics Research Symposium (PIERS 2007), Beijing, PEOPLES R CHINA, Web of Science.

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