Nano Archive

Growth of palladium nanoparticles: An experimental and numerical study

Agarwal, Vinay and Aruna, I. and Banerjee, Varsha and Mehta, B. R. (2008) Growth of palladium nanoparticles: An experimental and numerical study. PHYSICAL REVIEW B, 74 (3). 035412. ISSN 10980121

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Abstract

We study the effect of varying deposition time and temperature on the formation of palladium nanoparticles in an attempt to identify microscopic process which contribute towards their evolution. Computer simulations of a stochastic lattice model with the basic mechanisms of adsorption, diffusion and irreversible aggregation have been performed to mimic the underlying mechanism of particle growth. We propose a mass and temperature dependent diffusion term of the form D(m,T)[proportional]D0(T)m–gamma in order to obtain qualitative agreement with experimental data. The possibility of tuning deposition time, temperature and flux to obtain narrow particle size distributions has been explored. Wherever pertinent, simple analytical arguments have been presented.

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:5061
Deposited By:JNCASR
Deposited On:27 May 2009 10:24
Last Modified:27 May 2009 10:24

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