@article{discovery10033888,
           month = {December},
          number = {48},
         journal = {Nanotechnology},
       publisher = {IOP PUBLISHING LTD},
            year = {2016},
           title = {Random access actuation of nanowire grid metamaterial},
            note = {Original content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence (http://creativecommons.org/licenses/by/3.0/). Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.},
          volume = {27},
        keywords = {reconfigurable metamaterial, nanowire, metadevice, nanoelectromechanical system},
             url = {https://doi.org/10.1088/0957-4484/27/48/485206},
          author = {Cencillo-Abad, P and Ou, J-Y and Plum, E and Valente, J and Zheludev, NI},
            issn = {1361-6528},
        abstract = {While metamaterials offer engineered static optical properties, future artificial media with dynamic random-access control over shape and position of meta-molecules will provide arbitrary control of light propagation. The simplest example of such a reconfigurable metamaterial is a nanowire grid metasurface with subwavelength wire spacing. Recently we demonstrated computationally that such a metadevice with individually controlled wire positions could be used as dynamic diffraction grating, beam steering module and tunable focusing element. Here we report on the nanomembrane realization of such a nanowire grid metasurface constructed from individually addressable plasmonic chevron nanowires with a 230 nm {$\times$} 100 nm cross-section, which consist of gold and silicon nitride. The active structure of the metadevice consists of 15 nanowires each 18 {\ensuremath{\mu}}m long and is fabricated by a combination of electron beam lithography and ion beam milling. It is packaged as a microchip device where the nanowires can be individually actuated by control currents via differential thermal expansion.}
}