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Issue 28, 2018
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Dynamic strain in gold nanoparticle supported graphene induced by focused laser irradiation

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Abstract

Graphene on noble-metal nanostructures constitutes an attractive nanocomposite with possible applications in sensors or energy conversion. In this work we study the properties of hybrid graphene/gold nanoparticle structures by Raman spectroscopy and scanning probe methods. The nanoparticles (NPs) were prepared by local annealing of gold thin films using a focused laser beam. The method resulted in a patterned surface, with NPs formed at arbitrarily chosen microscale areas. Graphene grown by chemical vapour deposition was transferred onto the prepared, closely spaced gold NPs. While we found that successive higher intensity (6 mW) laser irradiation increased gradually the doping and the defect concentration in SiO2 supported graphene, the same irradiation procedure did not induce such irreversible effects in the graphene supported by gold NPs. Moreover, the laser irradiation induced a dynamic hydrostatic strain in the graphene on Au NPs, which turned out to be completely reversible. These results can have implications in the development of graphene/plasmonic nanoparticle based high temperature sensors operating in dynamic regimes.

Graphical abstract: Dynamic strain in gold nanoparticle supported graphene induced by focused laser irradiation

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Publication details

The article was received on 09 Apr 2018, accepted on 11 Jun 2018 and first published on 12 Jun 2018


Article type: Paper
DOI: 10.1039/C8NR02848F
Citation: Nanoscale, 2018,10, 13417-13425
  • Open access: Creative Commons BY-NC license
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    Dynamic strain in gold nanoparticle supported graphene induced by focused laser irradiation

    A. Pálinkás, P. Kun, A. A. Koós and Z. Osváth, Nanoscale, 2018, 10, 13417
    DOI: 10.1039/C8NR02848F

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