SFB TR6 - TP C4 Effect of modulated boundaries on structure formation near the liquid-solid transition in equilibrium and under shear"
In this project the investigation of the effects of modulated boundaries (walls, light fields) on the structure formation in colloidal fluids near the fluid-solid transition are scheduled by experiments (video microscopy) and computer simulations (Monte Carlo and Brownian Dynamics). Systems in two and three dimensions are explored in equilibrium and in non-equilibrium situations. In detail we explore the structure formation of magnetic colloids in front of structured surfaces, in light fields
and in magnetic fields, where interesting competing effects modify the growth from line-shaped structures to bulk-structures. Capillary crystallization is explored for charged colloids and for colloidal mixtures in fields between two parallel walls at various distances. The effect of shearing of parallel walls on the diffusion of defects in the ordered colloidal systems shall be investigated as well as the layering and laning effect of external forces on mixtures between walls.
- FB Physik
|(2013): Effects of boundaries on structure formation in low-dimensional colloid model systems near the liquid-solid-transition in equilibrium and in external fields and under shear The European Physical Journal Special Topics. 2013, 222(11), pp. 2973-2993. ISSN 1951-6355. eISSN 1951-6401. Available under: doi: 10.1140/epjst/e2013-02070-3||
Effects of boundaries on structure formation in low-dimensional colloid model systems near the liquid-solid-transition in equilibrium and in external fields and under shear
A brief review focusing on low-dimensional colloidal model systems is given describing both simulation studies and complementary experiments, elucidating the interplay between phase behavior, geometric structures, and transport phenomena. These studies address the response of these very soft colloidal systems to perturbations such as uniform or uniaxial compression, laser fields, randomly quenched disorder, and shear deformation caused by moving boundaries.
|Laufzeit:||01.07.2009 – 30.06.2013|