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Old 12-12-2009, 02:43 AM   #18 (permalink)
Pu241
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Quote:
Originally Posted by Winfield1990 View Post
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To gather opinions related to the 1000x as electrical conductive as the theoretical limit states , whether that is more hype , error , or actually a close reality of the nanotubes.

All of that aside , Why didnt you go to wiki yourself instead of telling me to , whenever you said to me are you sure that is about the electrical conductivity and not the thermal conductivity for the carbon nanotubes?
Electrical conductance of a SWNT have had actual measure measurements of electron density of 10EE7 A-cm2 with indications of the ability (theoretical?) to exceed 10EE13 A-cm2(way more than 1,000 times that of Cu).

Thermal conduction(measured at a specific temp, 100 degrees K) approaches nearly 40,000 W/m-K (again, way more than Cu)

These are actual measurements, but are on isolated (sometimes individual tubes) laboratory prepared samples. Production of bulk material with these values is unlikely.
Unless a new fabrication technology is developed, of which there are many under development.

Didn't need to check Wiki, as I know both thermal and electrical conduction of specific type (sub-classes) of these materials have very high conductivity. Typically, high thermal conduction in these materials preclude high electrical conduction and vice versa.
Many times the conductivity of these materials is anisotropic and these values are only seen along the axis of the tube, not across it.

So with the general term "conductive" used and no reference provided how did you know electrical conduction was meant?
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