Experimental demonstration of illusion optics with external cloaking effects

A metamaterial illusion optics with complementary medium and restoring medium is designed by using inductor-capacitor (L-C) network medium. The unprecedented effects of external cloaking and transforming one object to appear as another are demonstrated experimentally. We also demonstrate that the non-resonant nature of the L-C network decreases the sensitivity of the external cloaking effect to the variation of the frequency and results in an acceptable bandwidth of the whole device. (C) 2011 American Institute of Physics. [doi:10.1063/1.3629770]