Easter Bonnet

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.

Reference: Qiangfei Xia, Princeton University