Thin low-loss dielectric coatings for free-space cloaking

We report stereolithographic polymer-based fabrication and experimental operation of a microwave X-band cloaking device. The device is a relatively thin (about one wavelength thick) shell of an air-dielectric composite, in which the dielectric component has negligible loss and dispersion. In a finite band (9.7-10.1 GHz), the shell eliminates the shadow and strongly suppresses scattering from a conducting cylinder of six-wavelength diameter for TE-polarized free-space plane waves. The device does not require an immersion liquid or conducting ground planes for its operation. The dielectric constant of the polymer is low enough (ε = 2.45) to suggest that this cloaking technique would be suitable for higher frequency radiation, including visible light. © 2013 Optical Society of America.

Full Text

Duke Authors

Cited Authors

  • Urzhumov, Y; Landy, N; Driscoll, T; Basov, D; Smith, DR

Published Date

  • 2013

Published In

Volume / Issue

  • 38 / 10

Start / End Page

  • 1606 - 1608

PubMed ID

  • 23938884

International Standard Serial Number (ISSN)

  • 0146-9592

Digital Object Identifier (DOI)

  • 10.1364/OL.38.001606

Citation Source

  • SciVal