abstract

• The microrheology of viscoelastic fluids containing light-scattering inclusions is measured by depolarized dynamic light scattering (DDLS) from optically anisotropic spherical colloidal probes. The anisotropy of the probes allows us to measure both their translational and the rotational mean squared displacements simultaneously, and DDLS allows us to suppress the light scattered from the inclusions. The storage and loss moduli are determined from both mean squared displacements and the results compared with mechanical measurements. © 2007 The American Physical Society.

authors

• Andablo-Reyes E.
• Arauz Lara Bernardo José Luis
• Díaz-Leyva P.
• Haro-Pérez C.

publication date

• 2007-01-01

published in

• Physical Review E - Statistical, Nonlinear, and Soft Matter Physics  Journal

keywords

• Anisotropy; Elastic moduli; Light scattering; Mean square error; Rheology; Viscoelasticity; Depolarized dynamic light scattering (DDLS); Light scattering inclusions; Loss moduli; Viscoelastic fluids; Fluid mechanics

Digital Object Identifier (DOI)

• 10.1103/PhysRevE.75.041505

start page

end page

volume

• 75

issue

• 4