Evidence of Plasmonic Coupling in Gallium Nanoparticles/Graphene/SiC (Articolo in rivista)

Type
Label
  • Evidence of Plasmonic Coupling in Gallium Nanoparticles/Graphene/SiC (Articolo in rivista) (literal)
Anno
  • 2012-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1002/smll.201200694 (literal)
Alternative label
  • C. Yi, T.H. Kim, W. Jiao, Y. Yang, A. Lazarides, K. Hingerl, G. Bruno, A. Brown, Maria Losurdo (2012)
    Evidence of Plasmonic Coupling in Gallium Nanoparticles/Graphene/SiC
    in Small (Weinh., Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • C. Yi, T.H. Kim, W. Jiao, Y. Yang, A. Lazarides, K. Hingerl, G. Bruno, A. Brown, Maria Losurdo (literal)
Pagina inizio
  • 2721 (literal)
Pagina fine
  • 2730 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 8 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Institute of Inorganic Methodologies and of Plasmas IMIP-CNR, via Orabona 4, 70126 Bari, Italy Department of Electrical and Computer Engineering, Duke University, Durham, NC 27708, US Center for Surface- and Nanoanalytics, Johannes Kepler University Linz, Altenbergerstr. 69, 4040 Linz, Austria (literal)
Titolo
  • Evidence of Plasmonic Coupling in Gallium Nanoparticles/Graphene/SiC (literal)
Abstract
  • Graphene is emerging as a promising material for plasmonics applications due to its strong light-matter interactions, most of which are theoretically predicted but not yet experimentally realized. Therefore, the integration of plasmonic nanoparticles to create metal nanoparticle/graphene composites enables numerous phenomena important for a range of applications from photonics to catalysis. For these applications it is important to articulate the coupling of photon-based excitations such as the interaction between plasmons in each of the material components, as well as their charge-based interactions dependent upon the energy alignment at the metal/graphene interface. These coupled phenomena underpin an active application area in graphene-based composites due to nanoparticle-dependent surface-enhanced Raman scattering (SERS) of graphene phonon modes. This study reveals the coupling of a graphene/SiC support with Ga-nanoparticlelocalized surface plasmon resonance, which is of particular interest due to its ability to be tuned across the UV into the near-IR region. This work is the fi rst demonstration of the evolving plasmon resonance on graphene during the synthesis of surface-supported metal nanoparticles, thus providing evidence for the theoretically predicted screening revealed by a damped resonance with little energy shift. Therefore, the role of the graphene/substrate heterojunction in tailoring the plasmon resonance for nanoplasmonic applications is shown. Additionally, the coupled phenomena between the graphene-Ga plasmon properties, charge transfer, and SERS of graphene vibrational modes are explored. (literal)
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