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krisi
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re: Graphene bandgap opened by vapor
krisi   12/21/2010 11:37:39 PM
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To: @corradini. You are absolutely right the band-gap is a distance from the top of the valence band to the bottom of the conduction band...this research shows that presence of moisture modifies crystalline structure and changes the band-gap...whether that effect can be exploited practically is another story...Kris

corradini
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re: Graphene bandgap opened by vapor
corradini   12/21/2010 10:39:30 PM
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Ummm....I'm not an EE, or physicist, or anything remotely similar and thus qualified to hit the "oops" buzzer, here (I just think stuff up and try to make it ;-) BUT: isn't bandgap actually the 'distance' (in eV) from the TOP of the valence band to the BOTTOM of the conduction band?

No Gizmo
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re: Graphene bandgap opened by vapor
No Gizmo   11/1/2010 8:05:50 PM
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humidity+ heat, what happens to stability?

resistion
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re: Graphene bandgap opened by vapor
resistion   10/30/2010 4:02:16 PM
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Humidity sensitivity seems very unattractive to me, and 0.2 eV bandgap makes it looks like highly doped semiconductor only.

yalanand
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re: Graphene bandgap opened by vapor
yalanand   10/30/2010 3:51:23 PM
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Wow, was thrilled to read this article. Million times better than current conventional silicon pathways is no small achievement. I guess this will solve the old Electro Migration problem effectively.

wilber_xbox
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re: Graphene bandgap opened by vapor
wilber_xbox   10/30/2010 11:13:51 AM
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indeed an exciting article and with 2010 nobel prize to graphene, this is surely an exciting time for the researchers working in this area. i wonder what are the main challenges and difficulties to open a wider bandgap in graphene?

DrQuine
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re: Graphene bandgap opened by vapor
DrQuine   10/30/2010 1:52:19 AM
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This is an exciting development for microchip technology - and it doesn't even require rare earths! We have carbon and water available in abundance.

Luis Sanchez
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re: Graphene bandgap opened by vapor
Luis Sanchez   10/30/2010 12:52:50 AM
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Now I see how that is supposed to be used in computers. I heard that once this technology is mature, it'll make computers faster than ever. I wonder if that "a million time better" sentence in the first paragraph comes out from a hard number or just an expression. If conductivity is the only benefit of graphene inside chips that would mean that the IC's would become much more energy efficient... thus... lower heat dissipation, and such can reflect in the processing power of the chips. Did you hear that the 2010 Physics Nobel Prize wan the 2004 Ig Nobel too?... Goggle it.

krisi
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re: Graphene bandgap opened by vapor
krisi   10/29/2010 11:30:19 PM
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This is very exciting development...but the bandgap of 0.13eV is not that useful, too small! am I missing something here? Kris



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