The influence of van der Waals forces on droplet morphological transitions and solvation forces in nanochannels

摘要: The morphological phase transition between sessile and lenticular shapes of a droplet placed in nanochannel is observed upon increasing the volume. diagram for this system discussed within both macroscopic mesoscopic approaches. On level, van der Waals forces are taken into account via effective interface potential acting channel walls droplet. We discuss contact angle dependence on volume distance walls; turns out to be smaller than Young's angle. droplet's presence induces solvation force walls. It can either attractive or repulsive, depending width channel.