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Title: All-fiber photoacoustic gas sensor with graphene nano-mechanical resonator as the acoustic detector
Authors: Tan, Y
Yang, F
Ma, J
Ho, HL
Jin, W 
Keywords: Gas sensor
Multilayer graphene
Nano-mechanical resonator
Optical fiber sensor
Photoacoustic effect
Issue Date: 2015
Publisher: SPIE-International Society for Optical Engineering
Source: Proceedings of SPIE : the International Society for Optical Engineering, v. 9634, 96341K How to cite?
Journal: Proceedings of SPIE : the International Society for Optical Engineering 
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.
ISBN: 9781628418392
ISSN: 0277-786X
EISSN: 1996-756X
DOI: 10.1117/12.2194447
Appears in Collections:Conference Paper

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