Negative refractive index in chiral spiral metamaterials at terahertz frequencies |
| |
| Authors: | Mingxia He Zhen Tian Qirong Xing |
| |
| Institution: | a Center for Terahertz waves and College of Precision Instrument and Optoelectronics Engineering, Tianjin University, PR China
b Department of Physics, National University of Singapore, 2 Science Drive 3, Singapore 117542, Singapore |
| |
| Abstract: | A three-dimensional chiral metamaterial consisting of arrays of the multi-layered mutually twisted metallic spirals is proposed. We theoretically demonstrate such a chiral spiral structure exhibiting negative refractive index at terahertz frequencies. The chirality with varied refractive index can be obtained by change of configurations of the structure. The presented design offers flexibility for investigation of electromagnetic properties of chiral metamaterials in the terahertz regime and thus leads to a unique route to terahertz device applications. |
| |
| Keywords: | Chiral metamaterial Terahertz frequency Negative refractive index |
| 本文献已被 ScienceDirect 等数据库收录！ |
