Transformation optics using graphene |
| |
| Authors: | Vakil Ashkan Engheta Nader |
| |
| Institution: | Department of Electrical and Systems Engineering, University of Pennsylvania, Philadelphia, PA 19104, USA. |
| |
| Abstract: | Metamaterials and transformation optics play substantial roles in various branches of optical science and engineering by providing schemes to tailor electromagnetic fields into desired spatial patterns. We report a theoretical study showing that by designing and manipulating spatially inhomogeneous, nonuniform conductivity patterns across a flake of graphene, one can have this material as a one-atom-thick platform for infrared metamaterials and transformation optical devices. Varying the graphene chemical potential by using static electric field yields a way to tune the graphene conductivity in the terahertz and infrared frequencies. Such degree of freedom provides the prospect of having different "patches" with different conductivities on a single flake of graphene. Numerous photonic functions and metamaterial concepts can be expected to follow from such a platform. |
| |
| Keywords: | |
| 本文献已被 PubMed 等数据库收录！ |
|
