A Sinusoidally Architected Helicoidal Biocomposite.
basic_science · Level V
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- Record sourced from PubMed, PMID 27238289.
- Also identified by DOI 10.1002/adma.201600786.
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Abstract
A fibrous herringbone-modified helicoidal architecture is identified within the exocuticle of an impact-resistant crustacean appendage. This previously unreported composite microstructure, which features highly textured apatite mineral templated by an alpha-chitin matrix, provides enhanced stress redistribution and energy absorption over the traditional helicoidal design under compressive loading. Nanoscale toughening mechanisms are also identified using high-load nanoindentation and in situ transmission electron microscopy picoindentation.