Metamaterial with negative index due to chirality
University of Southampton · Ames National Laboratory · +4 more institutions
Abstract
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…
Citation impact
- FWCI
- 24.61
- Percentile
- 100%
- References
- 18
Authors
7- EPEric PlumCorresponding
University of Southampton
- JZJiangfeng Zhou
Ames National Laboratory, Iowa State University
- JDJianfeng Dong
Ningbo University, Ames National Laboratory, Iowa State University
- VFV.A. Fedotov
University of Southampton
- TKThomas Koschny
Foundation for Research and Technology Hellas, Ames National Laboratory, Iowa State University, University of Crete
Topics & keywords
- Metamaterial
- Chirality (physics)
- Polarizer
- Negative refraction
- Negative index metamaterials
- Photonic metamaterial
- Circular dichroism
- Circular polarization