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Proceedings Paper

Modeling of the surface color controlled by Ag nanograin structure
Author(s): Mizue Ebisawa; Satoru Hashimoto; Teruyoshi Hirano; Shuichi Maeda; Toshihide Iwanaga; Yasuhiro Mizutani
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Paper 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.

Paper Details

Date Published: 23 May 2011
PDF: 10 pages
Proc. SPIE 8083, Modeling Aspects in Optical Metrology III, 80830V (23 May 2011); doi: 10.1117/12.889301
Show Author Affiliations
Mizue Ebisawa, Tokyo Metropolitan Industrial Technology Research Institute (Japan)
Satoru Hashimoto, HYOUKAKEN Co., Ltd. (Japan)
Teruyoshi Hirano, GGK Co., Ltd. (Japan)
Shuichi Maeda, Tokai Univ. (Japan)
Toshihide Iwanaga, Tokyo Metropolitan Industrial Technology Research Institute (Japan)
Yasuhiro Mizutani, Univ. of Tokushima (Japan)


Published in SPIE Proceedings Vol. 8083:
Modeling Aspects in Optical Metrology III
Bernd Bodermann, Editor(s)

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