Publications [#269784] of David R. Smith

Papers Published
  1. Goldflam, MD; Driscoll, T; Chapler, B; Khatib, O; Jokerst, NM; Palit, S; Smith, DR; Kim, B-J; Seo, G; Kim, H-T; Ventra, MD; Basov, DN, Reconfigurable gradient index using VO2 memory metamaterials, Applied Physics Letters, vol. 99 no. 4 (2011) [doi] .

    We demonstrate tuning of a metamaterial device that incorporates a form of spatial gradient control. Electrical tuning of the metamaterial is achieved through a vanadium dioxide layer which interacts with an array of split ring resonators. We achieved a spatial gradient in the magnitude of permittivity, writeable using a single transient electrical pulse. This induced gradient in our device is observed on spatial scales on the order of one wavelength at 1 THz. Thus, we show the viability of elements for use in future devices with potential applications in beamforming and communications. © 2011 American Institute of Physics.