Contact Angles on a Soft Solid: From Young’s Law to Neumann’s Law
Contact Angles on a Soft Solid: From Young’s Law to Neumann’s Law
The contact angle that a liquid drop makes on a soft substrate does not obey the classical Young's relation, since the solid is deformed elastically by the action of the capillary forces. The finite elasticity of the solid also renders the contact angles different from that predicted by Neumann's law, …