Abstract
We present measurements and theory of a fluid-solid phase transition at a hard, flat wall in a two-sized hard-sphere mixture. With particle concentrations well below the level for bulk phase separation, a fluid monolayer (enriched in the larger spheres) forms at the wall. At slightly higher concentrations, the wall-fluid freezes into a wall-solid phase which coexists with the bulk fluid. Measurements of large-sphere area fraction vs. small-sphere bulk concentration in the fluid and solid phases are in reasonable agreement with the predictions of a model that accounts for entropic excluded-volume effects at a hat wall.
Original language | English |
---|---|
Pages (from-to) | 337-342 |
Number of pages | 6 |
Journal | European Physical Society Letters (EPL) |
Volume | 40 |
Issue number | 3 |
DOIs | |
Publication status | Published - 1 Nov 1997 |
Keywords
- DENSITY-FUNCTIONAL THEORY
- PHASE-SEPARATION
- DISPERSIONS
- BEHAVIOR