alison grace martin: Punctured surface.
alison grace martin: Holey Ball - Bridges MathArt, Enschede 2013
alison grace martin: Intertwined Labyrinths
alison grace martin: pentagon-heptagon lattice defect
alison grace martin: Bamboo vase - CARBON NANOTUBES AND RELATED STRUCTURES by Dr. Peter Harris
alison grace martin: Ievolution of a gyroid
alison grace martin: 30 great circles
alison grace martin: 3-fold saddle tower