Metamaterial with negative index due to chirality

作     者：E. Plum J. Zhou J. Dong V. A. Fedotov T. Koschny C. M. Soukoulis N. I. Zheludev 

作者机构：Optoelectronics Research Centre University of Southampton Southampton SO17 1BJ United Kingdom Department of Electrical and Computer Engineering and Microelectronics Research Center Iowa State University Ames Iowa 50011 USA Department of Physics and Astronomy and Ames Laboratory Iowa State University Ames Iowa 50011 USA Institute of Optical Fiber Communications and Network Technology Ningbo University Ningbo 315211 China Institute of Electronic Structure and Laser—FORTH and Department of Materials Science and Technology University of Crete Greece 

出 版 物：《Physical Review B》 (Phys. Rev. B Condens. Matter Mater. Phys.)

年 卷 期：2009年第79卷第3期

页      面：035407-035407页

核心收录：

学科分类：0808[工学-电气工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 07[理学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：Engineering and Physical Sciences Research Council, EPSRC, (EP/G00515X/1) Engineering and Physical Sciences Research Council, EPSRC 

主　　题：chirality circular dichroism metamaterials optical materials optical multilayers optical rotation polarisation refractive index 

摘      要：Recently it has been predicted that materials with exceptionally strong optical activity may also possess a negative refractive index, allowing the realization of superlenses for super-resolution imaging and data storage applications. Here we demonstrate experimentally and numerically that a chirality-induced negative index of refraction is possible. A negative index of refraction due to three-dimensional chirality is demonstrated for a bilayered metamaterial based on pairs of mutually twisted planar metal patterns in parallel planes, which also shows negative electric and magnetic responses and exceptionally strong optical activity and circular dichroism. Multilayered forms of the metamaterial are found to be suitable for use as ultrathin polarization rotators and circular polarizers for practical applications.