Nano Archive

Pulse like hydrogen sensing response in Pd nanoparticle layers

Khanuja, Manika and Varandani, Deepak and Mehta, Bodh R. (2007) Pulse like hydrogen sensing response in Pd nanoparticle layers. Applied Physics Letters, 91 (25). p. 2531. ISSN 00036951

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Abstract

This study reports an enhanced and unusual pulse like hydrogen sensing response in Pd nanoparticle layers. The faster H adsorption due to increased surface area and closure of conducting paths as a result of lattice expansion on hydride formation are the primary reasons for this. In comparison, Pd thin films exhibit a slow and subdued sensing response because of the overlap of the above two opposing effects and hydrogen induced lattice strain. Temperature independent conductivity in the temperature range of 20–300 K confirms the presence of interparticle gaps in the case of Pd nanoparticle layers.

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:5052
Deposited By:JNCASR
Deposited On:27 May 2009 10:44
Last Modified:27 May 2009 10:44

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