Discrete Minimal Surfaces
Minimal surfaces are surfaces that minimize the total surface area given a boundary constraint. A discrete minimal surface is polyhedral, i.e. constructed of polygonal faces. In this Demonstration, these polygons are replaced with their inscribed circles for purposes of visualization in computational geometry and simulations.
 B. Springborn, A. Bobenko, and T. Hoffmann. "Discrete Minimal Surfaces." (Sep 14, 2010) page.math.tu-berlin.de/~springb/discreteminimal/index.html.