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Optical and Mechanical Properties of Photoassisted, Self-assembled Nanoparticle Films

Published online by Cambridge University Press:  01 February 2011

G. A. Gaddy ,
G. A. Miner ,
Diane M. Stoakley ,
Edward P. Locke ,
Rick L. Moore ,
John Schultz ,
Don Creyts  and
Michael Knotts
G. A. Gaddy*
Affiliation:
United States Army Research Laboratory, Sensors and Electron Devices Directorate, Adelphi, MD 20783
G. A. Miner
Affiliation:
NASA Langley Research Center, Advanced Materials and Processing Branch, 6 West Taylor Street, Mail Stop 227, Hampton, VA 23681, U.S.A.
Diane M. Stoakley
Affiliation:
NASA Langley Research Center, Advanced Materials and Processing Branch, 6 West Taylor Street, Mail Stop 227, Hampton, VA 23681, U.S.A.
Edward P. Locke*
Affiliation:
National Research Council Post Doctoral Fellow, NASA Langley Research Center, Advanced Materials and Processing Branch, 6 West Taylor Street, Mail Stop 227, Hampton, VA 23681, U.S.A., GeorgiaTech Research Institute, STL, 400 West 10th Street, NW Atlanta, GA 30332, U.S.A.
Rick L. Moore
Affiliation:
National Research Council Post Doctoral Fellow, NASA Langley Research Center, Advanced Materials and Processing Branch, 6 West Taylor Street, Mail Stop 227, Hampton, VA 23681, U.S.A., GeorgiaTech Research Institute, STL, 400 West 10th Street, NW Atlanta, GA 30332, U.S.A.
John Schultz
Affiliation:
National Research Council Post Doctoral Fellow, NASA Langley Research Center, Advanced Materials and Processing Branch, 6 West Taylor Street, Mail Stop 227, Hampton, VA 23681, U.S.A., GeorgiaTech Research Institute, STL, 400 West 10th Street, NW Atlanta, GA 30332, U.S.A.
Don Creyts
Affiliation:
National Research Council Post Doctoral Fellow, NASA Langley Research Center, Advanced Materials and Processing Branch, 6 West Taylor Street, Mail Stop 227, Hampton, VA 23681, U.S.A., GeorgiaTech Research Institute, STL, 400 West 10th Street, NW Atlanta, GA 30332, U.S.A.
Michael Knotts
Affiliation:
National Research Council Post Doctoral Fellow, NASA Langley Research Center, Advanced Materials and Processing Branch, 6 West Taylor Street, Mail Stop 227, Hampton, VA 23681, U.S.A., GeorgiaTech Research Institute, STL, 400 West 10th Street, NW Atlanta, GA 30332, U.S.A.
*
†Previously: National Research Council Post Doctoral Fellow, NASA Langley Research Center, Advanced Materials and Processing Branch, 6 West Taylor Street, Mail Stop 227, Hampton, VA 23681, U.S.A.
‡Current address: K & M Environmental, Inc., Virginia Beach, VA 23454, U.S.A.
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Abstract

This paper presents research funded under the Defense Advanced Research Projects Agency (DARPA) MetaMaterials program for design and development of nanoparticle based, mesoscale electromagnetic and optical materials. Specifically, we present results of formulation and near infrared measurement-model validation for photoassisted, self-assembled multilayer metallic nanoparticle films. The multilayer films may be used as optical filters and absorbers. We demonstrate that nanoparticles can be formed in advanced polymer films that exhibit new electromagnetic constitutive properties. Metal nanoparticle films are produced from a single homogeneous resin containing a soluble precursor. Films cast from doped resins are exposed to UV radiation followed by a controlled thermal cure. The combination of UV exposure and thermal curing creates a multiphase material composed of low volume fractions of dispersed metallic Pd clusters (10–20 nm in size) and high concentrations of Pd nanoparticles which form surface and embedded metallic layers in the films. The layer separation is a function of UV exposure. These materials show significant absorption in the optical and near IR region of the spectrum. Furthermore, these films exhibit mechanical properties similar to bi-metallic layers, specifically, the films display reversible bending with exposure to light and an accompanying rapid temperature increase. This paper presents formulation processes, optical-mechanical measurements and measurement model comparison.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 797: Symposium W – Engineered Porosity for Microphotonics and Plasmonics , 2003 , W5.17
Copyright
Copyright © Materials Research Society 2004

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References

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