A class of line-transformed cloaks with easily-realizable constitutive parameters

Details A class of line-transformed cloaks with easily-realizable constitutive parameters A class of line-transformed cloaks with easily-realizable constitutive parameters

2009-10-13

arxiv.org/abs/0910.2283v1

Physics

Optics

15 pages, 6 figures

Scientific paper

We propose a class of line-transformed cylindrical cloaks which have easily-realizable constitutive parameters. The scattering properties of such cloaks have been investigated numerically for both transverse-electric (TE) and transverse-magnetic (TM) incidences of plane waves. A line-transformed invisibility cloak with a perfectly electric conducting (PEC) inner boundary is actually a reshaping of a PEC line to which the cloaked object is crushed. The numerical results of near-field distributions and far-field scattering properties have verified the above conclusions. We also investigate the relationship between the constitutive parameters of a line-transformed cloak and the length of the corresponding line. The changing range of constitutive parameters is large when the line is short, while the changing range becomes small when the line is long. The above conclusion provides an efficient way to realize the invisibility cloaks using artificial metamaterials.

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