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      Anisotropic absorber and tunable source of MIR radiation based on a black phosphorus-SiC metasurface

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      Embargo Lift Date: 2024-03-28
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      Author(s)
      Hajian, Hodjat
      Rukhlenko, I. D.
      Hanson, G. W.
      Özbay, Ekmel
      Date
      2022-03-28
      Source Title
      Photonics and Nanostructures - Fundamentals and Applications
      Print ISSN
      1569-4410
      Electronic ISSN
      1569-4429
      Publisher
      Elsevier BV
      Volume
      50
      Pages
      101020- 1 - 101020- 9
      Language
      English
      Type
      Article
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      Abstract
      We propose a black phosphorus-silicon carbide (BP-SiC) metasurface with in-plane structural symmetry that can act as both a nearly perfect anisotropic absorber and tunable polarized source of mid-infrared (MIR) radiation. The metasurface is a periodic array of square SiC patches integrated with a BP flake at the top and separated from a bottom reflector by a BaF2 spacer. We first use analytical calculations and numerical simulations to study the hybridization of the anisotropic plasmons of BP with isotropic phonons of SiC. We also analyze the in-plane characteristics of the resulting hybrid modes of the BP/SiC heterostructure and the BP-SiC metasurface. It is then demonstrated that the proposed metasurface can serve as a nearly perfect anisotropic absorber of MIR radiation with highly selective and omnidirectional features. It is also shown that the metasurface can be used as a polarized MIR source with tunable temperature, which is determined by the thermal equilibrium between the matter and radiation. The suggested design holds promise for artificial coatings that can tune the blackbody thermal signatures, MIR sensing, and highly directional in-plane transportation of the MIR energy.
      Keywords
      Black phosphorous
      Silicon carbide
      Anisotropic
      Tunable
      Metasurface absorber
      MIR radiation source
      Permalink
      http://hdl.handle.net/11693/111332
      Published Version (Please cite this version)
      https://doi.org/10.1016/j.photonics.2022.101020
      Collections
      • Department of Electrical and Electronics Engineering 4011
      • Department of Physics 2550
      • Institute of Materials Science and Nanotechnology (UNAM) 2258
      • Nanotechnology Research Center (NANOTAM) 1179
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