In-situ observation of adsorption process of fatty acid in contact region between copper hemisphere and glass surfaces using surface plasmon resonance measurement

Abstract

This study presents a novel optical method for visualizing adsorption process between contacting two surfaces using surface plasmon resonance (SPR) with the Otto configuration. The SPR microscopy developed in this study employs a point contact between a cupper hemisphere and an optically transparent glass prism. As a lubricant, hexadecane with Stearic acid of 0.01wt% was used. From some experiments, it was found that the SPR microscopy with a variable wavelength light source can measure reflectance spectrum easily as a two dimensional picture.