Nano Archive

Faster H recovery in Pd nanoparticle layer based Gd switchable mirrors: Size-induced geometric and electronic effects

Aruna , I. and Mehta , B. R. and Malhotra, L. K. (2005) Faster H recovery in Pd nanoparticle layer based Gd switchable mirrors: Size-induced geometric and electronic effects. Applied Physics Letters, 87 (10). p. 103101. ISSN 00036951

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Abstract

An investigation of the effect of the nanoparticle size in the Pd overlayer on the hydrogen-induced changes in the Gd switchable mirrors is reported in the present study. Deposition of a 10 nm thick Pd overlayer consisting of nanoparticles of 9 nm size results in a large increase in optical and electrical contrast and a substantial decrease in response and recovery time in Gd switchable mirrors. This study shows that a uniformly-deposited nanoparticle catalytic layer is important for improving H recovery. These results have been explained in terms of the size-induced increase in surface area, lattice contraction, and shift of Pd d-band centroid. The results of the present study, specifically the observation of decrease in recovery time has important implications for hydrogen sensor, storage, and switching applications.

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:5069
Deposited By:JNCASR
Deposited On:27 May 2009 10:15
Last Modified:27 May 2009 10:15

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