(Screenshot by Michelle Starr/CNET Australia)
This teensy, tiny "snow" man is just one fifth of the width of a human hair.
We put "snow" in inverted commas because he's not really made of snow at all; rather, he's made of two microscopic tin beads.
The snowman was made from two tin beads used to calibrate electron microscope astigmatism. 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 ion beam deposited platinum.
You can see the process of building the snowman in the video below, and more of Dr Cox's miniature sculptures here.