采用反射光谱、 扫描电镜及理论模拟计算对大珠母贝珍珠层的结构色及微结构进行了系统的研究。 结果表明： (1)大珠母贝珍珠层文石板片厚度从生长端到壳中区显著减小, 从540减至340 nm, 导致同级别反射峰波长呈现明显的蓝移现象; (2)大珠母贝珍珠层的结构色是由文石板片和蛋白质层构成的多层薄膜结构和黄色素的共同作用决定的。

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.