[ExI] Aerographite

[Rafal Smigrodzki]

A question for the mathematically proficient people: If you made a
sphere of aerographite, covered with a gas non-permeable membrane, for
example a few layers of graphene, and partially evacuated the inside,
would it float in the air without being crushed by its pressure?

See here, aerographite weighs about 0.3 g per liter, and is pretty stiff:

http://nextbigfuture.com/2012/07/aerographite-is-lightest-material.html#more

air is about 1.3 g/l, so you would need to remove about one gram of
air from a 1-liter sphere of aerographite to achieve neutral buoyancy
- but what would be the pressure on the surface of the sphere? Assume
you are not using a lighter-than air gas inside.

Atomically precise macroscopic carbon structures could be truly amazing.

Rafal