Hi all, I am thinking that, A surface is a minimal surface if and only if the mean curvature is zero. then, for a liquid bridge with a catenoid shape, there should be no Laplace pressure due to the zero mean curvature. But it is a capillary bridge with concave meniscus, how can it have no Laplace pressure? Any smart guy tell me what is wrong with my understanding on this? Thanks a lot!