Copper-Coated Cylindrical Internal Reflection Elements for Investigating Interfacial Phenomena

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Techniques for coating thin copper films on the surface of cylindrical germanium internal reflection elements are described. These films were then characterized in an aqueous environment. The expected exponential relationship between the depth of penetration of the evanescent wave into water and the thickness of the copper film was verified experimentally. The stability of vacuum-deposited copper coatings was strong enough that the internal reflection element could be exposed to an aqueous solution of a polysaccharide for more than 40 h. The weak adhesion of polysaccharides to copper surfaces was studied spectroscopically.

Keywords: Cylindrical internal reflection; Metal coating techniques; Spectroscopic techniques; Surface analysis

Document Type: Research Article


Affiliations: 1: Department of Chemistry, University of California, Riverside, California 92521 2: Department of Plant Pathology, University of California, Riverside, California 92521 3: Department of Microbiology, California State University, Long Beach, California 90840

Publication date: September 1, 1986

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