Science Graphene?

[jedidia]

No contradiction - it's a flat crystal, hard enough to withstand 4e6 Gs in it's plane, yet very flexible in Z axis.

yes, but what about repeated, punctual momentary stress? If this thing is able to not break apart when I hit it (only slightly) with a hammer, I see a glorious future for it in the tool making industry (High-speed cutters, mostly... then again, it would have to get a whole lot cheaper still.)

 

[Urwumpe]

well SolidWorks said, that (if Graphene really is so cool as they say) that would be very havy and expensive, but it would be able to land on Venus, if it's built of Graphene:

No, it would still be impossible - Graphene does not solve the problem that the laws of thermodynamics give you. The pressure on Venus is the smallest of all problems. It is just equivalent to 1000m deep water.

 

[HAL9001]

OK that's still a probklem, but a mannred saceship must be cavernous so the pressure would be a big priblem for a manned spacveship.

 

[T.Neo]

carbon nanotubes, a similar kind of material, reacts explosively to simple UV radiation,

Damn- what is the cause of this phenomenon?

I suppose a layer of something that reflects UV would help, but the idea of a potentially explosive spacecraft structure doesn't sit well with me. :shifty:

The pressure on Venus is the smallest of all problems. It is just equivalent to 1000m deep water

The pressure compounds the heat problem though, and the heat problem compounds the pressure problem...

 

[dumbo2007]

Any references? I had thought they were purely theoretical at this stage?

http://ieeexplore.ieee.org/search/f...eryText=single+electron+transistors&x=46&y=10

No they are not theoretical anymore

 

[Urwumpe]

Damn- what is the cause of this phenomenon?

Most likely that the 10 nm wavelength of UV light is around the diameter of most nanotubes... it produces resonance, that excites the carbon atoms to higher energy states.

But... it also requires oxygen for the reaction, it is only Ultraviolet light enhanced.

http://myweb.clemson.edu/~gmica/Publications/Ref_106.pdf