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 language | English |
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Title of host publication | 24th International Conference on Optical Fibre Sensors, OFS 2015 |
Publisher | SPIE |
Volume | 9634 |
ISBN (Electronic) | 9781628418392 |
DOIs | |
Publication status | Published - 1 Jan 2015 |
Event | 24th International Conference on Optical Fibre Sensors, OFS 2015 - Pestana Hotel and Convention Centre, Curitiba, Brazil Duration: 28 Sept 2015 → 2 Oct 2015 |
Conference
Conference | 24th International Conference on Optical Fibre Sensors, OFS 2015 |
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Country/Territory | Brazil |
City | Curitiba |
Period | 28/09/15 → 2/10/15 |
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