Modeling of the surface color controlled by Ag nanograin structure

Mizue Ebisawa; Satoru Hashimoto; Teruyoshi Hirano; Shuichi Maeda; Toshihide Iwanaga; Yasuhiro Mizutani

doi:10.1117/12.889301

23 May 2011 Modeling of the surface color controlled by Ag nanograin structure

Mizue Ebisawa, Satoru Hashimoto, Teruyoshi Hirano, Shuichi Maeda, Toshihide Iwanaga, Yasuhiro Mizutani

Proceedings Volume 8083, Modeling Aspects in Optical Metrology III; 80830V (2011) https://doi.org/10.1117/12.889301
Event: SPIE Optical Metrology, 2011, Munich, Germany

Abstract

In this paper, we propose an optical model of the surface color controlled by Ag nanograin structure. A forming method of Ag nanograin structure on the surface of a silver mirror by chemical conversion treatment was discovered. The surface has not only unique colors but also properties of bulk metal. The result of SEM observation of the Ag surface showed nanograin structure and varying in the grain size depending on the color. The size of the grains was from 20nm to 100nm. We focused on microscopic behavior of electrons in the Ag grain and the permittivity model was formulated based on Drude Lorentz theory. The model was designed on the assumption that the individual grain behaved like a metallic atom with bound electron different from the silver. The analytical values of this proposed model were compared with measurement values in a reflectance spectrum and a chromatic variation.

Citation Download Citation

Mizue Ebisawa, Satoru Hashimoto, Teruyoshi Hirano, Shuichi Maeda, Toshihide Iwanaga, and Yasuhiro Mizutani "Modeling of the surface color controlled by Ag nanograin structure", Proc. SPIE 8083, Modeling Aspects in Optical Metrology III, 80830V (23 May 2011); https://doi.org/10.1117/12.889301

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