Single atom thick graphene 'light bulb' demonstrated by scientists (Short Video)

hexus.net ^ | 18 June 2015, 15:36 | Mark Tyson

[Ernest_at_the_Beach]

Scientists have collaborated to create "what is essentially the world's thinnest light bulb". The development is yet another based upon the pure carbon wonder-material called graphene. Researchers passed current though atom-thin, flexible, transparent strips of graphene which reached temperatures over 2500°C, producing bright light visible to the naked eye.

[Diana in Wisconsin]

“...producing bright light visible to the naked eye.”

Which is a good thing in a light bulb!

Now, how soon before the EnviroWeenies start screamin’ about ‘graphene’ destroying the planet? ;)

[Ernest_at_the_Beach]

Further Excerpt

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Behind the new development was a team of scientists from Columbia, Seoul National University (SNU), and Korea Research Institute of Standards and Science (KRISS). These were led by Young Duck Kim, a postdoctoral research scientist in James Hone’s group at Columbia Engineering.

The new light source development could have a great impact on computing and computer peripherals. First of all these lights are like 'chips', as you can see from the video above, showing how the light emission works. A graphene light chip based upon this development could form the foundation of a photonic circuit. To make such devices possible the team is working on the switching performance of the graphene light chips – it would need to switch very fast to create useful optical communication 'bits'.

[tallyhoe]

Cost? $150 per bulb?? Watt had it right!!!

[Lurkina.n.Learnin]

Graphene is going to change our lives in ways too numerous, to count. Amazing stuff.

[buffaloguy]

Twenty minutes.

[Durus]

Interesting article until they started in with “2D” materials. I don’t know why it irritates me but it really does.

[American Constitutionalist]

Is it sort of like graphite ?

[Lurkina.n.Learnin]

Sort of. Same thing only different.

[Lurkina.n.Learnin]

Graphene
https://en.wikipedia.org/wiki/Graphene

[Koracan]

...graphene 'light bulb' ...

And I just converted all my House Lamps to LED.

[HandyDandy]

From wiki:

Graphene is a zero-gap semiconductor, because its conduction and valence bands meet at the Dirac points. The Dirac points are six locations in momentum space, on the edge of the Brillouin zone, divided into two non-equivalent sets of three points. The two sets are labeled K and K'. The sets give graphene a valley degeneracy of gv = 2. By contrast, for traditional semiconductors the primary point of interest is generally Γ, where momentum is zero.[47] Four electronic properties separate it from other condensed matter systems.

So, ah, whatta ya think 'bout that?

[Lurkina.n.Learnin]

Sweet!

[Covenantor]

umm....you clipped the first part of the sentence, the part that says the graphene ribbon reached a temperature of 2500°C or 4532°F which caused the warm glow.

Rememeber the movie “Farenheit 451” that being the flash point of paper.

You’re going to need a bigger air condition, probably made of tungsten.

;>)

[Ernest_at_the_Beach]

I need more education....

[Covenantor]

more at
http://www.spacedaily.com/m/reports/Graphene_gets_bright_with_ultra_thin_lightbulb_999.html

[Dr. Bogus Pachysandra]

“Graphene is going to change our lives in ways too numerous, to count. Amazing stuff.”

Did all this start with the Buckyballs? Buckminster Fullerine?

[HandyDandy]

I think it was Al Einstien who said (something like) “if you can’t explain it in terms a layman can understand, then you don’t understand it yourself”.

[muir_redwoods]

I’ve seen four or five videos depicting illustrations of what graphene can do. I’ve never seen actual graphene ever do anything. What’s the difference between graphene and unobtainium or dilithium crystals?

[HandyDandy]

Good point. I mean, I could hand you a bar of gold-pressed Latinum and tell you it was sheathed in graphene. How could you prove it wasn’t.