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Updated: May 24, 2026

Visible-light Induced Reduction of Graphene Oxide Using Plasmonic Nanoparticle
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Published on: September 22, 2015

Plasmonic graphene transparent conductors.

Guowei Xu1, Jianwei Liu, Qian Wang

  • 1Department of Physics & Astronomy, University of Kansas, Lawrence, KS 66045, USA. xgw@ku.edu

Advanced Materials (Deerfield Beach, Fla.)
|March 7, 2012
PubMed
Summary
This summary is machine-generated.

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Researchers developed plasmonic graphene by self-assembling silver nanoparticles onto graphene. This advanced material enhances light scattering and electrical conductance, showing promise for optoelectronic devices.

Area of Science:

  • Materials Science
  • Nanotechnology
  • Optoelectronics

Background:

  • Graphene exhibits unique electronic and optical properties.
  • Plasmonic nanoparticles can enhance light-matter interactions.
  • Transparent conductors are crucial for optoelectronic devices.

Purpose of the Study:

  • To fabricate plasmonic graphene using silver nanoparticles.
  • To investigate the localized surface-plasmonic effect in graphene.
  • To evaluate the potential of plasmonic graphene as a transparent conductor.

Main Methods:

  • Thermally assisted self-assembly of silver nanoparticles on graphene.
  • Optical characterization of localized surface-plasmon resonance.
  • Finite-difference time-domain (FDTD) simulations.

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Design, Fabrication, and Experimental Characterization of Plasmonic Photoconductive Terahertz Emitters
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  • Electrical conductance measurements.

    • Main Results:

    • Localized surface-plasmon resonance shifted from 446 to 495 nm with increasing nanoparticle size (50-150 nm).
    • Observed light-scattering enhancement in the solar spectrum.
    • Simulations confirmed resonance frequency and amplitude decrease with increasing graphene thickness.
    • Electrical conductance improved by a factor of 2-4 compared to pristine graphene.

    Conclusions:

    • Plasmonic graphene fabrication is achieved via nanoparticle self-assembly.
    • Enhanced light scattering and electrical properties were demonstrated.
    • Plasmonic graphene is a promising transparent conductor for optoelectronics.