Thinnest Possible Invisibility Cloak using graphene monolayers

Tweet A graphene cloak idea stems from the mantle cloaking concept, which Andrea Alù's group at the University of Texas at Austin have proposed at microwaves using frequency-selective surfaces.

ACS Nano - Atomically Thin Surface Cloak Using Graphene Monolayers

We discuss here the use of a graphene monolayer to realize the concept of “cloaking by a surface”, proposing the thinnest possible mantle cloak with operation in the far-infrared and terahertz (THz) regime. We show that an atomically thin graphene monolayer may drastically suppress the scattering of planar and cylindrical objects and, at the same time, preserve moderately broad bandwidth of operation. In addition, we exploit the large tunability of the graphene conductivity to provide active, dynamically tunable invisibility cloaks and versatile THz switching devices.

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