Hierarchical interconnections in the nano-composite material bone: fibrillar cross-links resist fracture on several length scales


Fantner, Georg E., Rabinovych, O., Schitter, Georg, Thurner, Philipp J., Kindt, J.H., Finch, Marquesa, Weaver, James C., Golde, Laura S., Morse, Daniel E., Lipman, Everett A., Rangelow, Ivo W. and Hansma, Paul K. (2006) Hierarchical interconnections in the nano-composite material bone: fibrillar cross-links resist fracture on several length scales. Composites Science and Technology, 66, (9), 1205-1211. (doi:10.1016/j.compscitech.2005.10.005).

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Description/Abstract

Bone is a complex and very important multi-constituent bio-composite. In this work, we focus on the arrangement of bone constituents from the nanoscopic to the microscopic scale, and investigate the influence of their arrangements on the fracture mechanisms of the whole composite. We find that bone, on the nanoscopic scale, consists of mineralized collagen fibrils held together by a non-fibrillar organic matrix, which results in a primary failure mode of delamination between mineralized fibrils. In turn, these mineralized fibrils form one of three types of filaments that span microcracks in fractured bone samples, possibly resisting the propagation of these cracks.

Item Type: Article
ISSNs: 0266-3538 (print)
Related URLs:
Keywords: bone, afm, mechanical properties, non-collagenous proteins, filaments, collagen, fibrils
Subjects: T Technology > T Technology (General)
R Medicine > RZ Other systems of medicine
Q Science > QC Physics
Divisions: University Structure - Pre August 2011 > School of Engineering Sciences > Bioengineering Sciences
ePrint ID: 48830
Date Deposited: 16 Oct 2007
Last Modified: 27 Mar 2014 18:32
URI: http://eprints.soton.ac.uk/id/eprint/48830

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