I stumbled across Lui Kawasumi's laser-cut metal seats while working in the Furniture Department at RISD. A recent graduate of RISD, Kawasumi's series of Mozaika furniture uses a repeating square pattern that changes across the entirety of the pieces due the convex and concave bulges. These ingenious laser-cut squares are only connected at the vertices, allowing this pattern transformation.
The larger of the two Mozaika chairs was recently featured at NY Design Week 2011's NoHo Next exhibit. Having sat in both (quite comfortable) chairs, I hope that Kawasumi can find a way to put this series into production.