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Palermomania.it | Story Filed: 06/16/2015 – 02:05 | Article read 1044 times
It made graphene and the size of a strand of a few atoms. It is the smallest light bulb in the world made by the research group coordinated by Young Duck Kim, of Columbia University in New York.
The tiny bulbs graphene may help enlighten future display super thin, flexible, transparent, and open the way to optical communications based on graphene. The researchers attached filaments of graphene, the thickness of a carbon atom, to metal electrodes.
The filaments was applied an electric current that made them warm: graphene has reached temperatures of over 2,500 degrees who did shine so ‘intense that the light emitted and’ visible to the naked eye. The authors have returned to the same material, the carbon used by the Thomas Edison, the inventor of the light bulb in his first experiments. To make a difference, compared to the carbon used by Edison, is the way in which the graphene conducts heat which allows it to reach high temperatures without melting the electrodes of metal: when you heat the high temperatures are confined to the central part and not to around the filament.
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