Molecular dynamics of the wetting and drying of a wall with a long-ranged wall-fluid interaction

The authors have studied the influence of a long-ranged force between a wall and a fluid on the wetting properties of the wall-fluid system. The system with short-ranged forces, i.e. cut-off Lennard-Jones potentials only, has been studied extensively in previous simulations, revealing the presence of a wetting and a drying transition. The authors have increased the cut-off radius of the wall-fluid potential by a factor of 5 in the simulations and re-inspected these transitions. The wetting transition turns out not to be much affected by the long-ranged potential but the drying transition is suppressed.