Open AccessMagnetically tunable left handed metamaterials by liquid crystal orientation
Author(s) -
Fuli Zhang,
Lei Kang,
Qian Zhao,
Ji Zhou,
Xiaopeng Zhao,
D. Lippens
Publication year - 2009
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.17.004360
Subject(s) - metamaterial , liquid crystal , birefringence , optics , materials science , refractive index , left handed , orientation (vector space) , microwave , split ring resonator , optoelectronics , physics , geometry , mathematics , quantum mechanics
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.