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A Platinum Nanowire Sensor for Ethylene in Air.
- Source :
-
ACS sensors [ACS Sens] 2023 Jul 28; Vol. 8 (7), pp. 2869-2878. Date of Electronic Publication: 2023 Jul 06. - Publication Year :
- 2023
-
Abstract
- A single platinum nanowire (PtNW) chemiresistive sensor for ethylene gas is reported. In this application, the PtNW performs three functions: (1) Joule self-heating to a specified temperature, (2) in situ resistance-based temperature measurement, and (3) detection of ethylene in air as a resistance change. Ethylene gas in air is detected as a reduction in nanowire resistance by up to 4.5% for concentrations ranging from 1 to 30 ppm in an optimum NW temperature range from 630 to 660 K. This response is rapid (30-100 s), reversible, and reproducible for repetitive ethylene pulses. A threefold increase in signal amplitude is observed as the NW thickness is reduced from 60 to 20 nm, commensurate with a signal transduction mechanism involving surface electron scattering.
Details
- Language :
- English
- ISSN :
- 2379-3694
- Volume :
- 8
- Issue :
- 7
- Database :
- MEDLINE
- Journal :
- ACS sensors
- Publication Type :
- Academic Journal
- Accession number :
- 37415388
- Full Text :
- https://doi.org/10.1021/acssensors.3c00885