Researchers from Columbia University are working on a light bulb chip that heats graphene produce light, in a process that’s very similar to incandescence. The only difference is, the graphene filament is just 1 atom thick. 

Forget LED light bulbs... in the future, your lighting may be made from carbon. Columbia University researchers have built a light bulb chip that superheats graphene to produce illumination. While that's the same basic concept that you see in an incandescent bulb, the graphene filament measures just one atom thick -- this is the world's thinnest light bulb, and may be close to being the thinnest possible. It's transparent, too, which could suit it to see-through displays. More from Engadget.

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