Now showing items 1-5 of 5

    • Enhancement of nonlinear optical phenomena by localized resonances 

      Rodríguez Echarri, A.; Cox, Joel D.; Yu, Renwen; García de Abajo, F. Javier (ACS, 2018-01-20)
      Article
      Open Access
      Nonlinear optics at the nanoscale is severely limited by the small departure of available materials from linear behavior. Despite intense efforts placed into overcoming this problem using multiple strategies for enhancing ...
    • Nonlinear Plasmonic Sensing with Nanographene 

      Yu, Renwen; Cox, Joel D.; García de Abajo, Francisco Javier (APS, 2016-09-16)
      Article
      Open Access
      Plasmons provide excellent sensitivity to detect analyte molecules through their strong interaction with the dielectric environment. Plasmonic sensors based on noble metals are, however, limited by the spectral broadening ...
    • Resonant Visible Light Modulation with Graphene 

      Yu, Renwen; Pruneri, Valerio; García de Abajo, Francisco Javier (ACS, 2015-03-13)
      Article
      Open Access
      Fast modulation and switching of light at visible and near-infrared (vis–NIR) frequencies are of utmost importance for optical signal processing and sensing technologies. No fundamental limit appears to prevent us from ...
    • Structural Coloring of Glass Using Dewetted Nanoparticles and Ultrathin Films of Metals 

      Yu, Renwen; Mazumder, Prantik; Borrelli, Nick F.; Carrilero, Albert; Ghosh, Dhriti S.; Maniyara, Rinu A.; Baker, David; García de Abajo, F. Javier; Pruneri, Valerio (ACS, 2016-04-22)
      Article
      Open Access
      Metal nanoparticles have been used for coloring glass since antiquity. Colors are produced by light scattering and absorption associated with plasmon resonances of the particles. Recently, dewetting at high temperature has ...
    • Toward next-generation nanophotonic devices 

      Yu, Renwen (Universitat Politècnica de Catalunya, 2019-07-11)
      Doctoral thesis
      Open Access
      In this thesis, we aim to explore several novel designs of nanostructures based on graphene to realize various functionalities. We briefly introduce the fundamental concepts and theoretical models used in this thesis in ...