Cavitation rheology of the eye lens

Cui, Jun and Lee, Cheol Hee and Delbos, Aline and McManus, Jennifer J. and Crosby, Alfred J. (2011) Cavitation rheology of the eye lens. Soft Matter, 7 (17). pp. 7827-7831. ISSN 1744-683X

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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.

Item Type: Article
Additional Information: The definitive version of this article is available in Soft Matter Vol.7 No.17(2012), pp.2827-2831. DOI: 10.1039/C1SM05340J
Keywords: Cavitation; rheology; bovine eye lens; anisotropic mechanical properties;
Academic Unit: Faculty of Science and Engineering > Chemistry
Item ID: 3833
Depositing User: Jennifer McManus
Date Deposited: 29 Aug 2012 15:43
Journal or Publication Title: Soft Matter
Publisher: Royal Society of Chemistry
Refereed: Yes

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