IFEG   20353
INSTITUTO DE FISICA ENRIQUE GAVIOLA
Unidad Ejecutora - UE
artículos
Título:
Electrokinetic and hydrodynamic properties of charged-particles systems
Autor/es:
G. NÄGELE; M. HEINEN; ADOLFO J. BANCHIO; C. CONTRERAS-ABURTO
Revista:
EUROPEAN PHYSICAL JOURNAL-SPECIAL TOPICS
Editorial:
EDP SCIENCES S A
Referencias:
Lugar: Paris; Año: 2013 vol. 222 p. 2855 - 2872
ISSN:
1951-6355
Resumen:
Dynamic processes in dispersions of charged spherical particles are of
importance both in fundamental science, and in technical and bio-medical
applications. There exists a large variety of charged-particles
systems, ranging from nanometer-sized electrolyte ions to micron-sized
charge-stabilized colloids. We review recent advances in theoretical
methods for the calculation of linear transport coefficients in
concentrated particulate systems, with the focus on hydrodynamic
interactions and electrokinetic effects. Considered transport properties
are the dispersion viscosity, self- and collective diffusion
coefficients, sedimentation coefficients, and electrophoretic mobilities
and conductivities of ionic particle species in an external electric
field. Advances by our group are also discussed, including a novel
mode-coupling-theory method for conduction-diffusion and viscoelastic
properties of strong electrolyte solutions. Furthermore, results are
presented for dispersions of solvent-permeable particles, and particles
with non-zero hydrodynamic surface slip. The concentration-dependent
swelling of ionic microgels is discussed, as well as a far-reaching
dynamic scaling behavior relating colloidal long- to short-time
dynamics.