Chinese Science Bulletin

, 52:1136

Photonic crystal type structure in bivalve ligament of Pinctada maxima

Brief Communication/Optics

Abstract

The dry ligament of Pinctada maxima normally appears black; however, it can exhibit striking blue structural colors after being wetted by water. The field-mission SEM investigation shows that the ligament is made of lamellae, which, about 35 μm thick, are made of proteins and aragonite fibers of about 78 nm in diameter. In each single lamella, the fibers are highly aligned characterized by a 2D photonic crystal type structure. According to measured reflective spectra and theoretical simulations, the dry and wet ligaments possess photonic stop band at ultraviolet and blue wavelengths, respectively, which are responsible for structural colorations of ligament.

Keywords

ligament of Pinctada maxima structural color aragonite fiber photonic crystal 

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Copyright information

© Science in China Press and Springer-Verlag GmbH 2007

Authors and Affiliations

  1. 1.School of Chemistry and Chemical EngineeringGuangxi UniversityNanningChina

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