  Surfaces with constant mean curvature (CMC) are critical points of the area
with volume constraint. They serve as a mathematical model of surfaces of soap
bubbles and tiny liquid drops. CMC surfaces are said to be stable if the second
variation of the area is nonnegative for all volume-preserving variations
satisfying the given boundary condition. In this paper, we examine the
stability of CMC hypersurfaces in general Euclidean space possibly having
boundaries on two parallel hyperplanes. We reveal the stability of equilibrium
hypersurfaces without self-intersection for the first time in all dimensions.
The analysis is assisted by numerical computations.
