Image of a single walled carbon nanotube. Hexagonally arranged carbon atoms can form minute (hence nano-) tubes. Rather like rolled up graphene. This is an extreme close up looking through a ring of six carbon atoms at the far wall of the tube.
Illustration ID: NANOTUBE-2
Russell Kightley
Illustration size: 16.8 Mpixels (48 MB uncompressed) - 4096x4096 pixels (13.7x13.7 in / 34.7x34.7 cm at 300 ppi)