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Ethanol vapor sensing properties of triangular silver nanostructures based on localized surface plasmon resonance.
- Source :
-
Sensors (Basel, Switzerland) [Sensors (Basel)] 2011; Vol. 11 (9), pp. 8643-53. Date of Electronic Publication: 2011 Sep 05. - Publication Year :
- 2011
-
Abstract
- A sensitive volatile organic vapor sensor based on the LSPR properties of silver triangular nanoprisms is proposed in this paper. The triangular nanoprisms were fabricated by a nanosphere lithography (NSL) method. They have sharp vertices and edges, and are arranged in an ideal hexangular array. These characteristics ensure that they exhibit an excellent LSPR spectrum and a high sensitivity to the exterior environment changes. The LSPR spectra responding to ethanol vapor and four other volatile organic vapors-acetone, benzene, hexane and propanol-were measured with a UV-vis spectrometer in real time. Compared with the other four vapors, ethanol exhibits the highest sensitivity (∼0.1 nm/mg L(-1)) and the lowest detection limit (∼10 mg/L) in the spectral tests. The ethanol vapor test process is also fast (∼4 s) and reversible. These insights demonstrate that the triangular nanoprism based nano-sensor can be used in ethanol vapor detection applications.
Details
- Language :
- English
- ISSN :
- 1424-8220
- Volume :
- 11
- Issue :
- 9
- Database :
- MEDLINE
- Journal :
- Sensors (Basel, Switzerland)
- Publication Type :
- Academic Journal
- Accession number :
- 22164096
- Full Text :
- https://doi.org/10.3390/s110908643