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Nanoscale Structural and Mechanical Characterization of a Natural Nanocomposite Material:  The Shell of Red Abalone
Nano Letters
  • Xiaodong Li, University of South Carolina - Columbia
  • Wei-Che Chang
  • Yuh J. Chao
  • Rizhi Wang
  • Ming Chang
Publication Date
4-1-2004
Document Type
Article
Abstract

Nanoscale structural and mechanical characterization of the shell of a red abalone has been carried out. Cobble-like polygonal nanograins are basic building blocks that are used to construct individual aragonite platelets into a mother-of-pearl configuration known as nacre. The nanograin-structured aragonite platelets are not brittle in nature, but somewhat ductile. The deformability of the aragonite platelets together with the crack deflection, aragonite platelet slip, and organic adhesive interlayer contribute to the nacre's fracture toughness. Cracks formed in the outer prismatic layer of the shell do not show the crack diversion mechanism.

Citation Information
Xiaodong Li, Wei-Che Chang, Yuh J. Chao, Rizhi Wang, et al.. "Nanoscale Structural and Mechanical Characterization of a Natural Nanocomposite Material:  The Shell of Red Abalone" Nano Letters Vol. 4 Iss. 4 (2004) p. 613 - 617
Available at: http://works.bepress.com/xiaodong_li/71/