Publications [#269761] of David R. Smith

Papers Published
  1. Urzhumov, Y; Landy, N; Smith, DR, Isotropic-medium three-dimensional cloaks for acoustic and electromagnetic waves, Journal of Applied Physics, vol. 111 no. 5 (2012) [repository], [doi] .

    Abstract:
    We propose a generalization of the two-dimensional eikonal-limit cloak derived from a conformal transformation to three dimensions. The proposed cloak is a spherical shell composed of only isotropic media; it operates in the transmission mode and requires no mirror or ground plane. Unlike the well-known omnidirectional spherical cloaks, it may reduce visibility of an arbitrary object only for a very limited range of observation angles. In the short-wavelength limit, this cloaking structure restores not only the trajectories of incident rays, but also their phase, which is a necessary ingredient to complete invisibility. Both scalar-wave (acoustic) and transverse vector-wave (electromagnetic) versions are presented. © 2012 American Institute of Physics.