Looks like a slanted surface of Martian desert cliffs, but this is actually an
extreme closeup of a human hair.
Nanoresearchers who try to describe their research often up comparing their
devices to the size of a human hair - for good reason. At about 100 micrometers
thick, a human
![(Untitled)](/content/images/size/w795/a4ac8ff6d4bb9bd436689a3e3c662675/tumblr_nxqmcasbQG1spzrmao1_1280.jpg)