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Optical Properties of Metal Coated Particles

Published online by Cambridge University Press:  28 February 2011

Joseph W. Haus ,
H. S. Zhou ,
I. Honma  and
H. Komiyama
Joseph W. Haus
Affiliation:
Physics Dept., Rensselaer Polytechnic Institute, Troy, NY 12180–3590 and Research Center for Advanced Science and Technology, University of Tokyo, 4–6–1 Komba, Meguro-ku, Tokyo 153, JAPAN
H. S. Zhou
Affiliation:
Dept. of Chemical Engineering, Faculty of Engineering, The University of Tokyo, Bunkyo-ku, Tokyo 113, JAPAN
I. Honma
Affiliation:
Dept. of Chemical Engineering, Faculty of Engineering, The University of Tokyo, Bunkyo-ku, Tokyo 113, JAPAN
H. Komiyama
Affiliation:
Dept. of Chemical Engineering, Faculty of Engineering, The University of Tokyo, Bunkyo-ku, Tokyo 113, JAPAN
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Abstract

Metal-coated particles of nanometer dimensions can exhibit unusual optical properties due to the local-field enhancement mechanism. However, the properties are affected by uncontrollable factors that degrade the expected performance. In this paper we report theoretical results of coating thickness variations and diffuse interface effects on the optical absorption and the nonlinear optical response of particles with a CdS core and a silver coating. The linear and nonlinear optical properties are discussed within the context of the effective medium theory for small volume fractions.

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References

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