Publications [#269896] of David R. Smith

Papers Published
  1. Smith, DR; Rye, PM; Mock, JJ; Vier, DC; Starr, AF, Enhanced Diffraction from a Grating on the Surface of a Negative-Index Metamaterial, Physical Review Letters, vol. 93 no. 13 (September, 2004), pp. 137405-1-137405-4 [PhysRevLett.93.137405], [doi] .

    The stepping of the refraction interface, due to the finite unit cell size was showed by numerical simulation and by measurements on negative-index metamaterial wedge samples. The surface stepping on the metamaterial sample constitutes a grating, which could be expected to generate a diffracted beam in addition to the zeroth order refracted beam. The results confirms theoretical predictions of enhanced diffraction for negative index grating surfaces. It was found that a surface stepping added to a positive index wedge produces a single refracted beam identical to that of the smooth wedge.