Document Type

Thesis

Date of Award

10-31-1994

Degree Name

Master of Science in Engineering Science- (M.S.)

Department

Physics

First Advisor

Haim Grebel

Second Advisor

Roland A. Levy

Third Advisor

David S. Kristol

Abstract

This study is concerned with the fabrication of films made of gold, nickel, and silicon clusters dispersed in a polymeric matrix. The films were fabricated by use of metal or semiconductor sputtering and plasma polymerization of Methyl Methacrylate monomer in a capacitively coupled RF (13.56 MHz) sputtering system. Optical transmittance and optical reflectance were measured as a function of wavelength. The optical absorption of metal or silicon clusters was studied as a function of cluster size. Cluster size and content were determined from Transmission Electron Micrographs (TEM). The absorption band resulting from a plasma resonance in the clusters was found to be shifted to the longer wavelengths as the metal cluster size and volume fraction increased. For gold, a linear relationship was obtained between the wavelength of the absorption peak and the deposition time, while, for nickel it was nonlinear. Overall, the clusters seemed to maintain their bulk properties in addition to size related plasma resonances.

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