Open AccessProperties of Cartilage on Micro- and Nanolevel
Author(s) -
С. А. Чижик,
K. Wierzcholski,
Anastasiya Trushko,
Mariya A. Zhytkova,
A. Miszczak
Publication year - 2010
Publication title -
advances in tribology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.325
H-Index - 17
eISSN - 1687-5923
pISSN - 1687-5915
DOI - 10.1155/2010/243150
Subject(s) - materials science , nanoindenter , tribology , composite material , nanoindentation , cartilage , elastic modulus , tribometer , modulus , stylus , atomic force microscopy , biomedical engineering , curvature , nanotechnology , anatomy , acoustics , geometry , medicine , mathematics , physics
Results of investigation of the elastic modulus for cartilage tissue using a technique of micro- and nanoindentation performed with help of an atomic force microscope are presented. SEM and AFM methods were applied to visualize a topography of surface layers of the entire cartilage and as well as its slices and thus to reveal features of the collagen fibers orientation. The technique used for a quantitative evaluation of the elastic modulus under compression against a ball microindenter (curvature radius - 350 micron) and a nanoindenter (30 nm) is described. It was shown that the cartilage behavior is highly stabile under the load if the entire composite structure of cartilage tissue is engaged into the deformation process. Tribological characteristics were investigated using the ball indenter oscillated by a tuning fork. Dependence of the friction coefficient from applied loads was obtained that revealed strong influence of an interstitial fluid on friction properties. Friction coefficient of a rat cartilage tissue as 0.08 was obtained using a developed plant prototype for tribological measurements based on the AFM construction
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