reviewAdvanced MaterialsJul 3, 2019Closed access

Multiscale Toughening Mechanisms in Biological Materials and Bioinspired Designs

University of California, Riverside · Purdue University West Lafayette · +5 more institutions

PubMed
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Abstract

Biological materials found in Nature such as nacre and bone are well recognized as light-weight, strong, and tough structural materials. The remarkable toughness and damage tolerance of such biological materials are conferred through hierarchical assembly of their multiscale (i.e., atomic- to macroscale) architectures and components. Herein, the toughening mechanisms of different organisms at multilength scales are identified and summarized: macromolecular deformation, chemical bond breakage, and biomineral crystal imperfections at the atomic scale; biopolymer fibril reconfiguration/deformation and biomineral nanoparticle/nanoplatelet/nanorod translation, and crack reorientation at the nanoscale; crack…

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