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

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.

Authors:
; ; ;  [1]
  1. Department of Physics, National University of Singapore, 2 Science Drive 3 (Singapore)
Publication Date:
OSTI Identifier:
20702377
Resource Type:
Journal Article
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 86; Journal Issue: 16; Other Information: DOI: 10.1063/1.1906295; (c) 2005 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0003-6951
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; CORRELATIONS; CRYSTAL STRUCTURE; ELECTRON MICROSCOPY; ENAMELS; HARDNESS; MAN; MICROSTRUCTURE; NANOSTRUCTURES; SMALL ANGLE SCATTERING; STRESSES; TEETH; X-RAY DIFFRACTION

Citation Formats

Huaidong, Jiang, Xiangyang, Liu, Lim, Chwee T, Hsu, Chin Y, Department of Mechanical Engineering, National University of Singapore, 10 Kent Ridge Crescent, and Department of Preventive Dentistry, National University of Singapore, Lower Kent Ridge Road. Ordering of self-assembled nanobiominerals in correlation to mechanical properties of hard tissues. United States: N. p., 2005. Web. doi:10.1063/1.1906295.
Huaidong, Jiang, Xiangyang, Liu, Lim, Chwee T, Hsu, Chin Y, Department of Mechanical Engineering, National University of Singapore, 10 Kent Ridge Crescent, & Department of Preventive Dentistry, National University of Singapore, Lower Kent Ridge Road. Ordering of self-assembled nanobiominerals in correlation to mechanical properties of hard tissues. United States. https://doi.org/10.1063/1.1906295
Huaidong, Jiang, Xiangyang, Liu, Lim, Chwee T, Hsu, Chin Y, Department of Mechanical Engineering, National University of Singapore, 10 Kent Ridge Crescent, and Department of Preventive Dentistry, National University of Singapore, Lower Kent Ridge Road. 2005. "Ordering of self-assembled nanobiominerals in correlation to mechanical properties of hard tissues". United States. https://doi.org/10.1063/1.1906295.
@article{osti_20702377,
title = {Ordering of self-assembled nanobiominerals in correlation to mechanical properties of hard tissues},
author = {Huaidong, Jiang and Xiangyang, Liu and Lim, Chwee T and Hsu, Chin Y and Department of Mechanical Engineering, National University of Singapore, 10 Kent Ridge Crescent and Department of Preventive Dentistry, National University of Singapore, Lower Kent Ridge Road},
abstractNote = {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.},
doi = {10.1063/1.1906295},
url = {https://www.osti.gov/biblio/20702377}, journal = {Applied Physics Letters},
issn = {0003-6951},
number = 16,
volume = 86,
place = {United States},
year = {Mon Apr 18 00:00:00 EDT 2005},
month = {Mon Apr 18 00:00:00 EDT 2005}
}