TITLE

Ordering of self-assembled nanobiominerals in correlation to mechanical properties of hard tissues

AUTHOR(S)
Huaidong Jiang; Xiang-Yang Liu; Lim, Chwee T.; Hsu, Chin Y.
PUB. DATE
April 2005
SOURCE
Applied Physics Letters;4/18/2005, Vol. 86 Issue 16, p163901
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Biominerals in the hard tissues of many organisms exhibit superior mechanical properties due to their unique hierarchical nanostructures. In this article, we show the microstructure of human tooth enamel examined by position-resolved small-angle x-ray scattering and electron microscopy. It is found that the degree of ordering of the biominerals varies strikingly within the dental sample. Combined with nanoindentation, our results show that both the hardness and the elastic modulus increase predominantly with the ordering of the biomineral crystallites. This can be attributed to the fact that the ordered structure helps sustain a more complex mechanical stress.
ACCESSION #
17227478

 

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