Abstract

Graphene is emerging as a promising material for plasmonics applications due to itsstrong light-matter interactions, most of which are theoretically predicted but not yetexperimentally realized. Therefore, the integration of plasmonic nanoparticles to createmetal nanoparticle/graphene composites enables numerous phenomena important for arange of applications from photonics to catalysis. For these applications it is importantto articulate the coupling of photon-based excitations such as the interaction betweenplasmons in each of the material components, as well as their charge-based interactionsdependent upon the energy alignment at the metal/graphene interface. These coupledphenomena underpin an active application area in graphene-based composites due tonanoparticle-dependent surface-enhanced Raman scattering (SERS) of graphene phononmodes. This study reveals the coupling of a graphene/SiC support with Ga-nanoparticlelocalizedsurface plasmon resonance, which is of particular interest due to its ability to betuned across the UV into the near-IR region. This work is the fi rst demonstration of theevolving plasmon resonance on graphene during the synthesis of surface-supported metalnanoparticles, thus providing evidence for the theoretically predicted screening revealed bya damped resonance with little energy shift. Therefore, the role of the graphene/substrateheterojunction in tailoring the plasmon resonance for nanoplasmonic applicationsis shown. Additionally, the coupled phenomena between the graphene-Ga plasmonproperties, charge transfer, and SERS of graphene vibrational modes are explored.

Autore Pugliese

• Losurdo Maria

Tutti gli autori

• C. Yi; T.H. Kim; W. Jiao; Y. Yang; A. Lazarides; K. Hingerl; G. Bruno; A. Brown; M. Losurdo

Titolo volume/Rivista

Small

Anno di pubblicazione

2012

ISSN

1613-6810

ISBN

Non Disponibile

Numero di citazioni Wos

Nessuna citazione

Ultimo Aggiornamento Citazioni

Non Disponibile

Numero di citazioni Scopus

Non Disponibile

Ultimo Aggiornamento Citazioni

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Settori ERC

Non Disponibile

Codici ASJC

Non Disponibile