Magnetically tunable left handed metamaterials by liquid crystal orientation.
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.
Zhang
Fuli
F
Institut d'Electronique de Microélectronique et de Nanotechnologie, Université des Sciences et technologies de Lille, 59652 Villeneuve d'Ascq Cedex, France.
Kang
Lei
L
Zhao
Qian
Q
Zhou
Ji
J
Zhao
Xiaopeng
X
Lippens
Didier
D