Nano Archive

Concentration-specific hydrogen sensing behavior in monosized Pd nanoparticle layers

Khanuja, Manika and Kala, Shubhra and Mehta, B. R and Kruis, F. E (2008) Concentration-specific hydrogen sensing behavior in monosized Pd nanoparticle layers. Nanotechnology, 20 (1). 015502. ISSN 09574484

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Official URL: http://www.iop.org/EJ/abstract/0957-4484/20/1/0155...

Abstract

In this study, H2 sensing behavior of monosized and monocrystalline Pd nanoparticles has been studied as a function of H2 concentration and measurement temperature. A unique concentration-specific H2 sensing behavior with a 'pulsed' response at larger H2 concentrations and 'saturated' response at lower concentrations has been observed. The threshold concentration required for transition from 'saturated' to 'pulsed' response is very sensitive to measurement temperature. The characteristic change in the sensing behavior can be used to develop a novel sensor capable of determining H2 concentration level having high sensitivity and fast response. This study demonstrates that electrical and gas sensing properties of the nanoparticle layer depend critically on interparticle gaps.

Item Type:Article
Subjects:Physical Science > Nanophysics
Physical Science > Nano objects
Material Science > Nanochemistry
Material Science > Nanostructured materials
Divisions:Faculty of Engineering, Science and Mathematics > School of Physics
Faculty of Engineering, Science and Mathematics > School of Chemistry
ID Code:5040
Deposited By:JNCASR
Deposited On:27 May 2009 11:02
Last Modified:27 May 2009 11:02

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