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      All-aluminum hierarchical plasmonic surfaces in the infrared

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      Author(s)
      Ayas S.
      Bakan, G.
      Dana, A.
      Date
      2016
      Source Title
      Optical Materials Express
      Print ISSN
      2159-3930
      Publisher
      The Optical Society
      Volume
      6
      Issue
      3
      Pages
      823 - 830
      Language
      English
      Type
      Article
      Item Usage Stats
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      Abstract
      All-Aluminum metal-insulator-metal resonator structures withmultiple metal-insulator stacks showing resonances in the mid-infrared(MIR) are fabricated. Ultrathin native Al2O3 is used as the insulator layersenabling simple fabrication of the resonator structures. The structures withtwo oxide layers exhibit two distinct resonances in the MIR. Simulation ofthese structures shows confinement of magnetic field to the thicker bottomoxide at the shorter wavelength resonance and to the thinner top oxide at theother resonance. Simulations of higher order hierarchical structures with 3 and 4 oxide layers show multispectral response with precise control of theoxide thicknesses. The studied structures show great potential for IRapplications that require durability and multispectral characteristics.
      Keywords
      Aluminum
      Resonance
      Resonators
      Aluminum metal
      Hierarchical structures
      Higher-order
      Metal insulators
      Multi-spectral
      Precise control
      Resonator structures
      Shorter wavelength
      Metal insulator boundaries
      Permalink
      http://hdl.handle.net/11693/36820
      Published Version (Please cite this version)
      http://dx.doi.org/10.1364/OME.6.000823
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      • Institute of Materials Science and Nanotechnology (UNAM) 2258
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