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      Dynamic tuning of plasmon resonance in the visible using graphene

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      Author(s)
      Balci, S.
      Balci, O.
      Kakenov, N.
      Atar, F. B.
      Kocabas, C.
      Date
      2016
      Source Title
      Optics Letters
      Print ISSN
      0146-9592
      Electronic ISSN
      1539-4794
      Publisher
      The Optical Society
      Volume
      41
      Issue
      6
      Pages
      1241 - 1244
      Language
      English
      Type
      Article
      Item Usage Stats
      199
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      339
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      Abstract
      We report active electrical tuning of plasmon resonance of silver nanoprisms (Ag NPs) in the visible spectrum. Ag NPs are placed in close proximity to graphene which leads to additional tunable loss for the plasmon resonance. The ionic gating of graphene modifies its Fermi level from 0.2 to 1 eV, which then affects the absorption of graphene due to Pauli blocking. Plasmon resonance frequency and linewidth of Ag NPs can be reversibly shifted by 20 and 35 meV, respectively. The coupled graphene-Ag NPs system can be classically described by a damped harmonic oscillator model. Atomic layer deposition allows for controlling the graphene-Ag NP separation with atomic-level precision to optimize coupling between them.
      Keywords
      Atomic layer deposition
      Oscillators (electronic)
      Oscillators (mechanical)
      Plasmons
      Resonance
      Silver
      Surface plasmon resonance
      Tuning
      Close proximity
      Damped harmonic-oscillator models
      Dynamic tuning
      Electrical tuning
      Plasmon resonance frequencies
      Plasmon resonances
      Silver nanoprisms
      Visible spectra
      Graphene
      Graphite
      Metal nanoparticle
      Silver
      Chemistry
      Energy transfer
      Light related phenomena
      Procedures
      Surface plasmon resonance
      Energy Transfer
      Graphite
      Metal Nanoparticles
      Optical Phenomena
      Silver
      Surface Plasmon Resonance
      Permalink
      http://hdl.handle.net/11693/36853
      Published Version (Please cite this version)
      http://dx.doi.org/10.1364/OL.41.001241
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      • Department of Physics 2550
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