SURFACE ELASTICITY AND VISCOSITY OF RED CELL MEMBRANE.
In the reported experiments, force-deformation curves were measured for individual human red blood cells by applying an equal and opposite force at diametrically opposite left double quote points right double quote on the red cell rim. Upon release of a cell, it rapidly recovers its unstressed disklike shape in approximately 0. 3 sec. This deformation and subsequent recovery process is analyzed with a constitutive equation which describes the finite deformation at constant area of a two-dimensional viscoelastic solid. From the analysis and the experimental results, values obtained for the left double quote shear modulus of surface elasticity right double quote and left double quote coefficient of surface viscosity right double quote are on the order of 4 multiplied by 10** minus **3 dyn/cm and 5 multiplied by 10** minus **4 dyn sec/cm (P cm), respectively.
Hochmuth, RM; Hampel, WLIII
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