Nanoscale Squirrel Alberto created an image of a black squirrel that's only two to three microns wide. Just how small is it? You could fit 1000 of his squirrels head-to-tail on the head of a pin.

World’s Smallest Black Squirrel?

Professor Walter Smith put me in charge of a $100,000 scanning electron microscope and trusted me with a new technology for Haverford: electron beam lithography. Being able to manufacture nanoscale objects was fascinating, and I loved being on the cutting edge of a new program.” – Alberto Guerrero ’11