Electromagnetic cloaking by layered structure of homogeneous isotropic materials

Abstract

Electromagnetic invisibility cloak requires material with anisotropic distribution of the constitutive parameters deduced from a geometrical transformation as first proposed by Pendry et al. [Science 312, 1780 (2006)]. In this paper, we proposed a useful method to realize the required radius-dependent, anisotropic material parameters and to construct an electromagnetic cloak through concentric layered structure of thin, alternating layers of homogeneous isotropic materials. With proper design of the permittivity or the thickness ratio of the alternating layers, we demonstrated the low-reflection and power-flow bending properties of the proposed cloaking structure through rigorous analysis of the scattered electromagnetic fields. The proposed cloaking structure does not require anisotropy or inhomogeneity of the material constitutive parameters usually realized by metamaterials with subwavelength structured inclusions, therefore may lead to a practical path to an experimental demonstration of electromagnetic cloaking, especially in the optical range.

9 pages, 5 figures

References in corpus (6)

• Achieving transparency with plasmonic coatings
• Optical Hyperlens: Far-field imaging beyond the diffraction limit
• Full-wave simulations of electromagnetic cloaking structures
• Magnifying superlens in the visible frequency range
• Calculation of material properties and ray tracing in transformation media
• Directed sub-wavelength imaging using a layered metal-dielectric system

Cited by in corpus (10)

• Silicon nanostructure cloak operating at optical frequencies
• Full-wave finite-difference time-domain simulation of electromagnetic cloaking structures
• Electromagnetic wave manipulation using layered systems
• Approximate quantum cloaking and almost trapped states
• Isotropic transformation optics: approximate acoustic and quantum cloaking
• A Radial-Dependent Dispersive Finite-Difference Time-Domain Method for the Evaluation of Electromagnetic Cloaks
• Coordinate transformation based design of confined metamaterial structures
• The impedance-matched reduced acoustic cloaking with realizable mass and its layered design
• Electromagnetic beam modulating through transformation optical structures
• Electromagnetic interaction of arbitrary radial-dependent anisotropic spheres and improved invisibility for nonlinear-transformation-based cloaks