Localized surface plasmon resonance properties of Ag nanorod arrays on graphene-coated Au substrate

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review

4 Scopus Citations
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Author(s)

  • Haiwei Mu
  • Jingwei Lv
  • Chao Liu
  • Tao Sun
  • Jingping Zhang

Detail(s)

Original languageEnglish
Pages (from-to)216-220
Journal / PublicationOptics Communications
Volume402
Publication statusPublished - 1 Nov 2017

Abstract

Localized surface plasmon resonance (LSPR) on silver nanorod (SNR) arrays deposited on a graphene-coated Au substrate is investigated by the discrete dipole approximation (DDA) method. The resonance peaks in the extinction spectra of the SNR/graphene/Au structure show significantly different profiles as SNR height, and refractive index of the surrounding medium are varied gradually. Numerical simulation reveals that the shifts in the resonance peaks arise from hybridization of multiple plasmon modes as a result of coupling between the SNR arrays and graphene-coated Au substrate. Moreover, the LSPR modes blue-shifts from 800 nm to 700 nm when the thickness of the graphene layer in the metal nanoparticle (NP) - graphene hybrid nanostructure increases from 1 nm to 5 nm, which attribute to charge transfer between the graphene layer and SNR arrays. The results provide insights into metal NP-graphene hybrid nanostructures which have potential applications in plasmonics.

Research Area(s)

  • DDA, LSPR, SNR/graphene/Au substrate

Citation Format(s)

Localized surface plasmon resonance properties of Ag nanorod arrays on graphene-coated Au substrate. / Mu, Haiwei; Lv, Jingwei; Liu, Chao; Sun, Tao; Chu, Paul K.; Zhang, Jingping.

In: Optics Communications, Vol. 402, 01.11.2017, p. 216-220.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review