Plasmonic absorption properties of bimetallic metamaterials
  We demonstrate polarization controlled absorption in plasmonic bimetallic metamaterials. We fabricate and experimentally characterize Au/Ni ring resonator arrays, where by varying the wavelength and polarization of the incident wave, local electromagnetic fields and dissipation can be suppressed or enhanced in the Au and Ni areas of the rings. 
Evangelos Atmatzakis, Nikitas Papasimakis, Nikolay I. Zheludev
physics.optics