Solvation force for long ranged wall-fluid potentials
| dc.creator | Maciolek, A. | |
| dc.creator | Drzewinski, A. | |
| dc.creator | Bryk, P. | |
| dc.date | 2003-10-07 | |
| dc.date.accessioned | 2026-07-07T02:54:01Z | |
| dc.date.available | 2026-07-07T02:54:01Z | |
| dc.description | The solvation force of a simple fluid confined between identical planar walls is studied in two model systems with short ranged fluid-fluid interactions and long ranged wall-fluid potentials decaying as $-Az^{-p}, z\to \infty$, for various values of $p$. Results for the Ising spins system are obtained in two dimensions at vanishing bulk magnetic field $h=0$ by means of the density-matrix renormalization-group method; results for the truncated Lennard-Jones (LJ) fluid are obtained within the nonlocal density functional theory. At low temperatures the solvation force $f_{solv}$ for the Ising film is repulsive and decays for large wall separations $L$ in the same fashion as the boundary field $f_{solv}\sim L^{-p}$, whereas for temperatures larger than the bulk critical temperature $f_{solv}$ is attractive and the asymptotic decay is $f_{solv}\sim L^{-(p+1)}$. For the LJ fluid system $f_{solv}$ is always repulsive away from the critical region and decays for large $L$ with the the same power law as the wall-fluid potential. We discuss the influence of the critical Casimir effect and of capillary condensation on the behaviour of the solvation force. | |
| dc.description | 48 pages, 12 figures | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0310143 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0310143 | |
| dc.identifier | J. Chem. Phys. 120, 1921 (2004) | |
| dc.identifier | doi:10.1063/1.1635807 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/22383 | |
| dc.subject | Statistical Mechanics | |
| dc.title | Solvation force for long ranged wall-fluid potentials | |
| dc.type | text |