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X-ray Reflectivity Study of Gold Nanoparticles in a Polymer Matrix

Published online by Cambridge University Press:  17 March 2011

Kwanwoo Shin ,
Howard Wang ,
Sushil K. Satija ,
Charles C. Han  and
Daniel Josell
Kwanwoo Shin
Affiliation:
National Institute of Standards and Technology, 100 Bureau Dr. Gaithersburg, MD 20899 Dept. of Materials Science and Engineering, Kwanju Institute of Science and Technology, Kwangju, 500-712, Korea
Howard Wang
Affiliation:
National Institute of Standards and Technology, 100 Bureau Dr. Gaithersburg, MD 20899
Sushil K. Satija
Affiliation:
National Institute of Standards and Technology, 100 Bureau Dr. Gaithersburg, MD 20899
Charles C. Han
Affiliation:
National Institute of Standards and Technology, 100 Bureau Dr. Gaithersburg, MD 20899
Daniel Josell
Affiliation:
National Institute of Standards and Technology, 100 Bureau Dr. Gaithersburg, MD 20899
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Abstract

We have examined the structural evolution of a thin gold layer sandwiched between two polymer films using specular X-ray reflectivity. We used a depth-profiling model consisting of three independent layers, upper and bottom PS layers and an intermediate gold layer. The results show that a well-defined as-deposited Au layer of about 62 ± 3 Å breaks within 10 min of annealing at 120 °C. During the breakage of the Au film, the bottom low-Mw PS flows to fill into the void between the Au particles, causing the reduction of the bottom PS film, while the top polymer layer remains relatively constant.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 710: Symposia DD – Polymer Interfaces and Thin Films , 2001 , DD14.7.1
Copyright
Copyright © Materials Research Society 2002

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References

References and notes

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8.Deuterated PS has been used also to study the interdiffusion dynamics with high contrast to neutron reflection technique at a same time.; Shin, K., Wang, H., Satija, S. and Han, C., in preparation.Google Scholar
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