Contact time of nanodroplets obliquely impacting nanopillar-arrayed superhydrophobic surfaces: A molecular dynamics study

On nanopillar-arrayed superhydrophobic surfaces, the contact time of oblique nanodroplet impacts is for first investigated via molecular dynamics simulations. Here, are triggered by nanodroplets impacting surfaces under various impact angles, α. The simulation results show that owing to non-axisymmetry spreading factors on always less rather than smooth same angles. As angle increased from 5° 65°, is, different conditions, more remarkable as α > 35° instead < at low, medium, and high normal Weber numbers, Wen. Hence, sharp then slowly reduced Wen, which drastically sliding length further promotes rapid reduction in time. constant 35°, h/w 1 aspect ratio nanopillars, h/w, increased, surface conditions. hinders