All-fiber photoacoustic gas sensor with graphene nano-mechanical resonator as the acoustic detector

Yanzhen Tan, Fan Yang, Jun Ma, Hoi Lut Ho, Wei Jin

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

3 Citations (Scopus)

Abstract

We demonstrate an all-optical-fiber photoacoustic (PA) spectrometric gas sensor with a graphene nano-mechanical resonator as the acoustic detector. The acoustic detection is performed by a miniature ferrule-top nano-mechanical resonator with a ∼100-nm-thick, 2.5-mm-diameter multilayer graphene diaphragm. Experimental investigation showed that the performance of the PA gas sensor can be significantly enhanced by operating at the resonance of the grapheme diaphragm where a lower detection limit of 153 parts-per-billion (ppb) acetylene is achieved. The all-fiber PA sensor which is immune to electromagnetic interference and safe in explosive environments is ideally suited for real-world remote, space-limited applications and for multipoint detection in a multiplexed fiber optic sensor network.
Original languageEnglish
Title of host publication24th International Conference on Optical Fibre Sensors, OFS 2015
PublisherSPIE
Volume9634
ISBN (Electronic)9781628418392
DOIs
Publication statusPublished - 1 Jan 2015
Event24th International Conference on Optical Fibre Sensors, OFS 2015 - Pestana Hotel and Convention Centre, Curitiba, Brazil
Duration: 28 Sep 20152 Oct 2015

Conference

Conference24th International Conference on Optical Fibre Sensors, OFS 2015
CountryBrazil
CityCuritiba
Period28/09/152/10/15

Keywords

  • Gas sensor
  • Multilayer graphene
  • Nano-mechanical resonator
  • Optical fiber sensor
  • Photoacoustic effect

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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