Affiliations: Groupe Physico-Chimie des Colloïdes, Laboratoire d’Etude des Systèmes Organiques et Colloïdaux (LESOC), U.A. C.N.R.S. n° 406, Université Henri Poincaré – Nancy 1, Faculté des Sciences, Vandoeuvre lès Nancy Cedex, France
Note: [*] Reprint requests to: Dr. P. Mazeron, Université Henri Poincaré – Nancy 1, Faculté des Sciences, BP 239, 54506 Vandoeuvre lès Nancy Cedex, FRANCE; Fax: 33 (0) 38391 25 32; E-mail: [email protected]
Abstract: 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.
