Reconfigurable gradient index using VO2 memory metamaterials

TitleReconfigurable gradient index using VO2 memory metamaterials
Publication TypeJournal Article
Year of Publication2011
AuthorsM..D. Goldflam, T.. Driscoll, B.. Chapler, O.. Khatib, N.M. Jokerst, S.. Palit, D.R. Smith, B-J. Kim, G. Seo, H-T. Kim, M.. Di Ventra, D.N. Basov
JournalApplied Physics Letters
Volume99
Issue4
Pagination044103
Date Published2011
Abstract

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. (C) 2011 American Institute of Physics

Short TitleAppl. Phys. Lett.