Finite wavelength cloaking by plasmonic resonance

Details Finite wavelength cloaking by plasmonic resonance Finite wavelength cloaking by plasmonic resonance

2008-05-09

arxiv.org/abs/0805.1295v1

Physics

Optics

Scientific paper

10.1088/1367-2630/10/11/115020

We consider cloaking by a coated cylindrical system using plasmonic resonance, and extend previous quasistatic treatments to include the effect of finite wavelength. We show that a probe cylinder can still be cloaked at finite wavelengths, but the cloaking cylinder develops a non-zero scattering cross-section. We show that this latter effect is dominated by a monopole term in the case of an ideal (lossless) cloaking material, and by a dipole term in the case of a realistic (lossy) material. It can be reduced but not eliminated by variations of geometric or dielectric parameters of the cloaking cylinder.

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