Publications [#269636] of David R. Smith

Papers Published
  1. Urzhumov, Y; Landy, N; Driscoll, T; Basov, D; Smith, DR, Thin low-loss dielectric coatings for free-space cloaking., Optics Letters, vol. 38 no. 10 (May, 2013), pp. 1606-1608 [doi] .

    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.