通过液晶取向实现的磁可调左手超材料

Magnetically tunable left handed metamaterials by liquid crystal orientation.

作者信息

Zhang Fuli, Kang Lei, Zhao Qian, Zhou Ji, Zhao Xiaopeng, Lippens Didier

机构信息

Institut d'Electronique de Microélectronique et de Nanotechnologie, Université des Sciences et technologies de Lille, 59652 Villeneuve d'Ascq Cedex, France.

出版信息

Opt Express. 2009 Mar 16;17(6):4360-6. doi: 10.1364/oe.17.004360.

DOI:10.1364/oe.17.004360

PMID:19293863

Abstract

The tunability of an omega-type left handed metamaterial was demonstrated at microwave frequencies via the magnetic control of liquid crystal (LC) orientation. From the experimental and simulation results, it is shown that the left handed pass-band can be tuned by 220 MHz by changing the orientation of LC molecules by 90 degrees. A maximum index variation of 0.25 was obtained in the negative index regime with a measured LC birefringence of 0.05 in the 10 - 12 GHz frequency band.

摘要

通过对液晶（LC）取向的磁控，在微波频率下展示了ω型左手超材料的可调谐性。从实验和模拟结果可知，通过将LC分子取向改变90度，左手通带可被调谐220 MHz。在10 - 12 GHz频段内，测得LC双折射为0.05，在负折射率区域获得了最大为0.25的折射率变化。