Journal
SCIENCE
Volume 332, Issue 6035, Pages 1291-1294Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.1202691
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- U.S. Air Force Office of Scientific Research (AFOSR) [FA9550-08-1-0220, FA9550-10-1-0408]
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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.
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