Deformation of erythrocytes under shear: a small-angle light scattering study.
In this study, sharp small-angle light scattering (SALS) images of erythrocytes under increasing shear stresses in a Couette flow were obtained, and accurate measurements of the angular positions of the two first minima and maxima have been carried out. The deformed cells were assumed to be three-axis ellipsoids of constant volume for all shear stresses. Application of the Physical Optics Approximation (POA) then permitted the determination of the cell dimensions as a function of the applied shear stress. Our results agree with determinations obtained by other methods.
Mazeron
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Groupe Physico-Chimie des Colloïdes, U.A. C.N.R.S. n. 406, Université Henri Poincaré Nancy 1, Faculté des Sciences, France. mazeron@lesoc.u-nancy.fr
Muller
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el Azouzi
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D004907:Erythrocyte Deformability; D018056:Hemorheology; D006801:Humans; D008027:Light; D012542:Scattering, Radiation; D013314:Stress, Mechanical