Hard colloidal rods near a soft wall: wetting, drying, and symmetry breaking

Details Hard colloidal rods near a soft wall: wetting, drying, and symmetry breaking Hard colloidal rods near a soft wall: wetting, drying, and symmetry breaking

2006-01-23

arxiv.org/abs/cond-mat/0601524v1

Physics

Condensed Matter

Soft Condensed Matter

7 pages, 2 figures

Scientific paper

10.1209/epl/i2006-10062-4

Within an Onsager-like density functional theory we explore the thermodynamic and structural properties of an isotropic and nematic fluid of hard needle-like colloids in contact with a hard substrate coated with a soft short-ranged attractive or repulsive layer. As a function of the range and the strength of the soft interactions we find wetting and drying transitions, a pre-drying line, and a symmetry-breaking transition from uniaxial to biaxial in the wetting and drying film.

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