
1) Superhard material
Found on
https://www.crosswordclues.com/clue/graphene

Graphene is the first two-dimensional material consisting of a single atomic layer of carbon. It is therefore a flat layer of material one atom thick, thinner is simply not possible. The material's carbon atoms are divided into a hexagon structure (also called honeycomb or chicken wire). Graphene is the strongest material currently available on the...
Found on
https://www.tralert.com/en/lighting-terms/graphene/

(from the article `Physical Sciences`) ...alternative to nanotubes that was explored by Sasha Stankovich of Northwestern University, Evanston, Ill., and colleagues was the synthesis of ...
Found on
http://www.britannica.com/eb/a-z/g/60
No exact match found.