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    Estimating the mechanical properties of retinal tissue using contact angle measurements of a spreading droplet

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    Publication date
    2013
    Author
    Grant, Colin A.
    Twigg, Peter C.
    Savage, M.D.
    Woon, W.H.
    Wilson, M.C.T.
    Greig, D.
    Keyword
    Animals
    ; Elasticity
    ; Microscopy; Atomic Force
    ; Retina
    ; Surface properties
    ; Swine
    ; REF 2014
    Peer-Reviewed
    Yes
    
    Metadata
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    Abstract
    When a drop of liquid is placed on the surface of a soft material, the surface deformation and the rate of spreading of the triple contact point is dependent on the mechanical properties of the substrate. This study seeks to use drop spreading behavior to infer the mechanical properties of soft biological materials. As an illustration of the value of this technique we have compared the spreading behavior of a liquid droplet on two viscoelastic, soft materials, namely, an elastomer and a low concentration agar gel. The ratio of the mechanical properties of these soft materials obtained in this way is confirmed by atomic force microscopy (AFM) nanoindentation. By comparing the spreading behavior of a liquid on the retina with that of the same liquid on each of two viscoelastic materials, we can then estimate the elastic moduli of the retina: an estimate that is extremely difficult to carry out using AFM.
    URI
    http://hdl.handle.net/10454/5997
    Version
    No full-text in the repository
    Citation
    Grant CA, Twigg PC, Savage MD, Woon WH, Wilson M and Greig D (2013) Estimating the mechanical properties of retinal tissue using contact angle measurements of a spreading droplet. Langmuir. 29(16): 5080-5084.
    Link to publisher’s version
    http://dx.doi.org/10.1021/la400650t
    Type
    Article
    Collections
    Life Sciences Publications

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