High Abrasion Resistance with Sparse Mineralization: Copper Biomineral in Worm Jaws

@article{Lichtenegger2002HighAR,
  title={High Abrasion Resistance with Sparse Mineralization: Copper Biomineral in Worm Jaws},
  author={H. Lichtenegger and T. Sch{\"o}berl and M. Bartl and Herbert Waite and G. Stucky},
  journal={Science},
  year={2002},
  volume={298},
  pages={389 - 392}
}
Biominerals are widely exploited to harden or stiffen tissues in living organisms, with calcium-, silicon-, and iron-based minerals being most common. In notable contrast, the jaws of the marine bloodworm Glycera dibranchiata contain the copper-based biomineral atacamite [Cu2(OH)3Cl]. Polycrystalline fibers are oriented with the outer contour of the jaw. Using nanoindentation, we show that the mineral has a structural role and enhances hardness and stiffness. Despite the low degree of… Expand
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