Princeton University has posted the 56 works they've selected for their 2006 Art of Science exhibition. These are pieces "produced in the course of research or incorporating tools and concepts from science." Electrical Engineering grad student Qiangfei Xia's "Easter Bonnet" won third prize in the competition and I think it's stunning.
From his description of the artwork:
A laser pulse melted a tiny piece of metal on a silicon chip, resulting in an unexpected shape that looks like a very, very small Easter bonnet. An unintended dust particle serves as a decorative flower on its top. The size of the bonnet in this photo, measured from left to right, is about 45 micrometers, half the diameter of a human hair.