Line Tension and Nanometer Drop Wettability on Solid Surfaces

摘要

The dimensional dependence of the angle of solid surface wetting by a small drop on the latter's size R and radius of the wetting outline r is considered. Numerical values of specific linear energy γ_?(r) and line tension σ_r(r) of the wetting outline are calculated for a nanometer tin drop-substrate surface-aluminum film system. It is shown that wetting angle θ(R,r) in the drop-substrate surface system increases as the wetting outline's radius decreases.