Abstract:The structural color and microstructure of nacre in bivalve shells of Pinctada maxima were investigated by optical reflection spectra, scanning electron microscopy and theoretical simulation. The following results are obtained: (1)The thickness of aragonite tablets decreased significantly from growing to central region of nacre, which leads to a blue-shift of reflection peak wavelength with the same reflection order obviously; (2)The structural color of nacre in bivalve shells of Pinctada maxima is derived from the combination effects of aragonite-protein multilayer structure and yellow pigments in nacre.
[1] DING Shi-lei, ZHANG Gang-sheng(丁世磊,张刚生). Spectroscopy and Spectral Analysis(光谱学与光谱分析), 2006,26(12): 2200. [2] Metzler Rebecca A, Abrecht Mike, Olabisi Ronke M, et al. Physical Review Letters, 2007, 98(26): 268102. [3] Brink D J, Vander berg N G, Botha A J. Appl. Opt., 2002, 41: 717. [4] Towe Kenneth M, Harper Jr Charles W. Science, New Series, 1966, 154(3745): 153. [5] Alexander A, Sherwood H. Gemmologist, 1940, 10: 48. [6] LI Bo, ZHOU Ji, LI Long-tu, et al(李 勃, 周 济, 李龙土, 等). Chinese Science Bulletin(科学通报), 2005, 50(13): 1422. [7] Tan T L, Wong D, Lee P. Opt. Express, 2004, 12(20): 4847.