Cui, Jun and Lee, Cheol Hee and Delbos, Aline and McManus, Jennifer J. and Crosby, Alfred J.
Cavitation rheology of the eye lens.
Soft Matter, 7 (17).
The anisotropic mechanical properties of bovine eye lenses were measured using cavitation rheology
over a range of length scales. The technique involves inducing a cavity at the tip of a syringe needle in
different regions of the lens. Effective Young’s moduli of the nucleus and cortex of the lens were
determined, as approximately 11.8 and 0.8 kPa, respectively, on macroscopic length scales. We also
measured the mechanical properties of the lens on the length scale of a single cell, suggesting that the
stiffness significantly decreased from that in the bulk measurements for both the nucleus and cortex. In
addition, during the growth of the cavity anisotropic propagation in the cortex was observed, while in
the nucleus, the propagation was isotropic. We further explored the elasticity of the cavity deformation,
showing both elastic and inelastic deformation occurred in the nucleus with equal contributions while
deformation in the cortex was elastic and reversible.
||The definitive version of this article is available in Soft Matter Vol.7 No.17(2012), pp.2827-2831. DOI: 10.1039/C1SM05340J
||Cavitation; rheology; bovine eye lens; anisotropic mechanical properties;
||Faculty of Science and Engineering > Chemistry
||29 Aug 2012 15:43
|Journal or Publication Title:
||Royal Society of Chemistry
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