A Sinusoidally-Architected Helicoidal Biocomposite

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 re...

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Bibliographic Details
Published in:arXiv.org 2016-06
Main Authors: Yaraghi, Nicholas A, Guarín-Zapata, Nicolás, Grunenfelder, Lessa K, Hintsala, Eric, Bhowmick, Sanjit, Hiller, Jon M, Betts, Mark, Principe, Edward L, Jae-Young, Jung, Sheppard, Leigh, Wuhrer, Richard, McKittrick, Joanna, Zavattieri, Pablo D, Kisailus, David
Format: Article
Language:English
Subjects:
Apatite
Biomedical materials
Chitin
Composite materials
Crustaceans
Energy absorption
Impact resistance
Nanoindentation
Online Access:Get full text
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Summary: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 TEM picoindentation.
ISSN:2331-8422
DOI:10.48550/arxiv.1604.07798