Gold nanoparticle mediated graphene plasmon for broadband enhanced infrared spectroscopy

Lilan Peng, Lei Zhang, Jian Yuan, Chen Chen, Qiaoliang Bao, Cheng Wei Qiu, Zeping Peng, Kai Zhang

Research output: Contribution to journalArticleResearchpeer-review

15 Citations (Scopus)

Abstract

Graphene plasmonics, with dynamic tunable resonance wavelength, has been successfully used in broadband plasmon-enhanced infrared spectroscopy. However, the requirement for external voltage loading makes the practical application sophisticated. In this work, the hybrid structure of graphene nanodot array (GNA) and gold nanoparticles (AuNPs) has been proposed as a passive platform for broadband infrared absorption enhancement. Numerical simulations show that the plasmon resonance peak of GNA becomes stiffer and broader when introducing AuNPs, and this is also proved by experimental results that the vibrational modes of polyethylene oxide molecule in a broad spectral range can be simultaneously enhanced. The metal-graphene hybrid plasmonic system has been proved to be a promising candidate for infrared sensing, which is significant for safety and healthy applications.

Original languageEnglish
Article number264001
Number of pages6
JournalNanotechnology
Volume28
Issue number26
DOIs
Publication statusPublished - 6 Jun 2017

Keywords

  • gold nanoparticals
  • graphene
  • infrared absorption
  • plasmonics

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