1) Carbon nanotube 2) Shade of black
Found on
https://www.crosswordclues.com/clue/vantablack
Vantablack is a substance made of carbon nanotubes and is the blackest substance known, absorbing a maximum of 99.965% of radiation in the visible spectrum. It comprises a forest of vertical tubes which are `grown`. When light strikes vantablack, instead of bouncing off, it becomes trapped and is continually deflected between the tubes before ev.....
Found on
http://en.wikipedia.org/wiki/Vantablack
No exact match found.
