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| Optical properties and color analysis of various pearl shells
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| Myung-Jin Lee, Weon-Sik Chae, Jin-Gyo Seo and Jong-Wan Park |
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| Department of Materials and Chemical Engineering, Graduate School of Engineering, Hanyang University, Seoul 133-791, Korea |
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Optical properties and color analysis of nacreous layers were performed using various pearl shells. The cross section and microstructure of the surface in each nacreous layers were observed through a SEM (Scanning Electron Microscope), and the diffraction pattern on SEM images was analyzed using FFT (Fast Fourier
Transform). Through these analysises, it was verified that the color and optical characteristics are closely related to the structure of nacreous layers. Incident angle-dependent reflection spectrum was used to examine the phenomena of color differenceas the direction of observation. Quantified values on the color change were obtained by CIE L*a*b* color scale. Using this research, database for the characteristics of natural pearl shells can be established, and the precise analytic method for observation of pearl shells was suggested.
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 v25_3_203-210.pdf (656.2K), Down : 141, 2010-04-07 16:17:25
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