Conformal carpet and grating cloaks

Abstract

We introduce a class of conformal versions of the previously introduced quasi-conformal carpet cloak, and show how to construct such conformal cloaks for different cloak shapes. Our method provides exact refractive-index profiles in closed mathematical form for the usual carpet cloak as well as for other shapes. By analyzing their asymptotic behavior, we find that the performance of finite-size cloaks becomes much better for metal shapes with zero average value, e.g., for gratings.

added Ref. 12; added 2 figures; reformatted

References in corpus (6)

• Hiding Under the Carpet: a New Strategy for Cloaking
• Dielectric Optical Cloak
• Silicon nanostructure cloak operating at optical frequencies
• Anisotropic Metamaterials Emulated by Tapered Waveguides: Application to Optical Cloaking
• Lateral Shift Makes a Ground-Plane Cloak Detectable
• Finite wavelength cloaking by plasmonic resonance

Cited by in corpus (5)

• First experimental demonstration of an isotropic electromagnetic cloak with strict conformal mapping
• Newtonian photorealistic ray tracing of grating cloaks and correlation-function-based cloaking-quality assessment
• Time-of-flight imaging of invisibility cloaks
• Photorealistic rendering of unidirectional free-space invisibility cloaks
• Photorealistic ray tracing of free-space invisibility cloaks made of uniaxial dielectrics