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Driscoll, T.,Kim, H.-T.,Chae, B.-G.,Kim, B.-J.,Lee, Y.-W.,Jokerst, N. M.,Palit, S.,Smith, D. R.,Di Ventra, M.,Basov, D. N. American Association for the Advancement of Scienc 2009 Science Vol.325 No.5947
<P>The resonant elements that grant metamaterials their distinct properties have the fundamental limitation of restricting their useable frequency bandwidth. The development of frequency-agile metamaterials has helped to alleviate these bandwidth restrictions by allowing real-time tuning of the metamaterial frequency response. We demonstrate electrically controlled persistent frequency tuning of a metamaterial, which allows the lasting modification of its response by using a transient stimulus. This work demonstrates a form of memory capacitance that interfaces metamaterials with a class of devices known collectively as memory devices.</P>