Abstract
A novel strategy is proposed by using surface plasmon resonance technique to investigate the corrosion process of silver thin film within 100 nm thickness exposed to laboratory air. Specifically, we continuously test surface plasmon resonance curves of silver thin film for 40 days and calculate its permittivity and thickness. Measurements of energy dispersive spectrometer indicate that there are silver sulfide formations on the film surface in the corrosion process. By using Maxwell–Garnett effective medium theory, the volume fraction of silver sulfide was confirmed in the silver/silver sulfide composites film. The results reveal that the concentration of silver sulfide in the film sample increases exponentially during the corrosion process and increases rapidly in the initial stage.
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