Sensors 2011, 11(9), 8643-8653; doi:10.3390/s110908643
Article

Ethanol Vapor Sensing Properties of Triangular Silver Nanostructures Based on Localized Surface Plasmon Resonance

1,2,* email, 2email, 2email, 2email and 2email
Received: 25 July 2011; in revised form: 28 August 2011 / Accepted: 31 August 2011 / Published: 5 September 2011
(This article belongs to the Section Physical Sensors)
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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.
Keywords: localized surface plasmon resonance; volatile organic vapor; triangular nanoprism; sensitivity
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MDPI and ACS Style

Ma, W.; Yang, H.; Wang, W.; Gao, P.; Yao, J. Ethanol Vapor Sensing Properties of Triangular Silver Nanostructures Based on Localized Surface Plasmon Resonance. Sensors 2011, 11, 8643-8653.

AMA Style

Ma W, Yang H, Wang W, Gao P, Yao J. Ethanol Vapor Sensing Properties of Triangular Silver Nanostructures Based on Localized Surface Plasmon Resonance. Sensors. 2011; 11(9):8643-8653.

Chicago/Turabian Style

Ma, Wenying; Yang, Huan; Wang, Weimin; Gao, Ping; Yao, Jun. 2011. "Ethanol Vapor Sensing Properties of Triangular Silver Nanostructures Based on Localized Surface Plasmon Resonance." Sensors 11, no. 9: 8643-8653.

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