Optimized nanoscale composite behaviour in limpet teeth | Zendy

Dun Lu | Zendy; Asa H. Barber | Zendy

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Optimized nanoscale composite behaviour in limpet teeth

Author(s) -

Dun Lu,

Asa H. Barber

Publication year - 2011

Publication title -

journal of the royal society interface

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.655

H-Index - 139

eISSN - 1742-5689

pISSN - 1742-5662

DOI - 10.1098/rsif.2011.0688

Subject(s) - limpet , materials science , composite number , goethite , composite material , nanocomposite , matrix (chemical analysis) , nanoscopic scale , nanotechnology , chemistry , biology , ecology , organic chemistry , adsorption , gastropoda

Limpet teeth are striking examples of a biological fibrous nanocomposite consisting of goethite mineral within a polymeric chitin matrix. The mechanical function of limpet teeth is critically dependent on the efficient composite behaviour of goethite, formed as distinct discontinuous nanofibres, reinforcing the matrix. The mechanical properties of discrete volumes from a limpet tooth measured using atomic force microscopy indicate how the tooth structure can be approximated as a short fibre-reinforced composite. Short fibre composite analysis reveals how the goethite nanofibres have a length optimized for the transfer of stress from the matrix to fibre and highlight how this limpet tooth structure is efficient in a mechanical load-bearing function.

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