Superscatterer Illusions Without Using Complementary Media

作者：Xu, He-Xiu^*; Wang, Guang-Ming; Ma, Kai; Cui, Tie Jun

来源：Advanced Optical Materials, 2014, 2(6): 572-580.

DOI：10.1002/adom.201400011

• BROAD-BAND
• ELECTROMAGNETIC CLOAK
• LENS
• METAMATERIALS
• INVISIBILITY
• SCATTERING

Research has suggested that it is possible to create a superscatterer using complementary media, which is however very difficult to realize, and hence such a superscatterer has not been verified by experiments. An easier way to realize superscatterer illusions with abundant functionality based on transformation optics is proposed here, in which only anisotropic and inhomogeneous media with positive components are required. By enclosing a metallic object within the superscatterer illusion device, the scattering signature of the object equals that of an enlarged metallic object with a pre-controlled scaling factor and multiple dielectric objects with pre-designed material properties. The proposal is demonstrated by numerical simulations and finally verified by experiments of an elaborately designed proof-of-concept sample made of 6408 gradually varying meta-atoms. A new strategy, combining compact electric-and magnetic-resonance particles, is proposed to fulfill the complicated inhomogeneous and anisotropic material properties.

• 出版日期2014-6
• 单位东南大学; 中国人民解放军空军工程大学