abstract

• We characterize the translational and rotational dynamics of birefringent spherical colloidal particles by depolarized light scattering in the far- and near-field regimes. For this purpose, we use depolarized dynamic light scattering and propose an extension of dynamic heterodyne near-field light scattering that takes into account the polarization state of the light. Such a combination of methods allows to access colloidal dynamics in an extended q-range and permits to evaluate different modes of particles motion in suspension. Furthermore, we obtain a good agreement between results from the far- and near-field approaches thus validating our proposal and opening the possibility to investigate simultaneously the subtle interplay between translational and rotational motions of anisotropic colloidal particles in length-scales from the order of the particle size to several interparticle distances. © 2015 AIP Publishing LLC.

authors

• Arauz Lara Bernardo José Luis
• De La Cruz-Burelo H.A.
• Escobedo-Sánchez M.A.
• Haro-Pérez C.
• Rojas-Ochoa L.F.

publication date

• 2015-01-01

published in

• Journal of Chemical Physics  Journal

keywords

• Birefringence; Colloids; Depolarization; Dynamics; Light scattering; Particle size; Anisotropic colloidal particles; Colloidal dynamics; Colloidal particle; Depolarized light scattering; Interparticle distances; Polarization state; Rotational dynamics; Spherical colloidal particles; Suspensions (fluids); colloid; anisotropy; biochemistry; chemistry; colloid; diffusion; light; particle size; radiation scattering; rotation; Anisotropy; Biochemical Processes; Colloids; Diffusion; Light; Particle Size; Rotation; Scattering, Radiation

Digital Object Identifier (DOI)

• 10.1063/1.4926391

PubMed ID

• 26233159

start page

end page

volume

• 143

issue

• 4