Friday, 25 December 2009
was built by the National Physical Laboratory out of two of the tin nano particle beads that are usually used to calibrate electron microscope lenses. It measures just 0.01mm (1/5 the width of human hair).The eyes and smile were milled using a focused ion beam, and the nose, which is under 1 µm wide (or 0.001 mm), is an ion beam deposited on platinum.
"A nanomanipulation system was used to assemble the parts 'by hand' and platinum deposition was used to weld all elements together. The snowman is mounted on a silicon cantilever from an atomic force microscope whose sharp tip 'feels' surfaces creating topographic surveys at almost atomic scales." Read more.
This tinny tinny snowman illustrates, scientists also have a sense of humor and express their good cheer to you, as do I, at the end of the video.