Abstract
Instability in morphological and optical properties of sputtered grown percolated gold (Au) film has been experimentally investigated during ambient aging. Optical absorbance of the film recorded at various stage of aging shows huge variation in the spectra. A schematic is drawn to explain aging-assist evolution in the morphology (dewetting) and correlated with the variation in optical properties. The validity of model is confirmed by X-ray reflectivity (XRR) techniques, performed for both as-deposited and aged samples. Furthermore, change in the color of Au thin film with aging also seen in the photographic images of the samples that also support the absorbance and XRR results.
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