Molecular dynamics of a liquid drop spreading in a corner formed by two planar substrates

Molecular-dynamics simulations were used to investigate the spreading of no nvolatile liquid drops in a solid corner formed by two planar substrates. T o understand the effect of the corner on the spreading, liquid drops in a c orner with angles of 45 degrees, 90 degrees, and 135 degrees as well as on a flat substrate were examined. Both the solid substrate and the liquid dro p were modeled using the Lennard-Jones interaction potential in the present study. Simulation results show that the mass center of the liquid molecule s migrated towards the corner as time evolved and the spreading rate increa sed as the corner angle decreased. It is found that the variation of the me an spreading area with time can be described by a general relation of A(t)s imilar to t, which is in agreement with results obtained by other investiga tors. The distribution of liquid atoms per unit normalized corner degree sh ows a similar trend for different corner angles. [S1063-651X(99)02311-9].