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Growth Characteristics of Au/SiO2 Nanocomposites

Published online by Cambridge University Press:  15 February 2011

M. D. Jaeger ,
R. E. Soltis ,
J. A. Thomas ,
J. Hangas ,
A. E. Chen  and
E. M. Logothetis
M. D. Jaeger
Affiliation:
Visiting Scientist, Michigan State University Center for Sensor Materials, East Lansing, Michigan
R. E. Soltis
Affiliation:
Physics Department, Ford Research Laboratory, 20,000 Rotunda, Dearborn, Michigan
J. A. Thomas
Affiliation:
Physics Department, Ford Research Laboratory, 20,000 Rotunda, Dearborn, Michigan
J. Hangas
Affiliation:
Physics Department, Ford Research Laboratory, 20,000 Rotunda, Dearborn, Michigan
A. E. Chen
Affiliation:
Physics Department, Ford Research Laboratory, 20,000 Rotunda, Dearborn, Michigan
E. M. Logothetis
Affiliation:
Physics Department, Ford Research Laboratory, 20,000 Rotunda, Dearborn, Michigan
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Abstract

This paper describes experimental studies of the growth morphology of Au/SiO2 nanocomposites consisting of nanometer-sized metal particles imbedded in a metal oxide, formed by the sequential deposition of metal and metal-oxide layers by RF sputtering. The materials work is aimed at the development of novel resistive-type exhaust gas constituent sensors. Using digitized images from a transmission electron microscope and an automated particle counting routine, we have measured the particle size distributions for films with varying layer thicknesses and deposition conditions. We find strong dependence of the particle size and overall composite structure on the Au and SiO2 layer thicknesses, in agreement with previous work.[1] We also identified four microstructure classes which can occur.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 549: Symposium FF – Advanced Catalytic Materials - 1998 , 1998 , 173
Copyright
Copyright © Materials Research Society 1999

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