Researchers have developed a method for the electrical conductivity of graphene to be lwa influence. By the graphene with a laser to shine in, they knew the material to switch from a conductor to an insulator.
Graphene, thanks to the addition of metallic ‘impurities’, all can be used as a semiconductor. The switch between conductor and insulator is then, however, as with regular semiconductors, depending on electrical impulses. Researchers of the Argentine Cordoba university, an Argentine research centre, a Spanish nanotechnology institute and a German technical university have, however, lasers are utilized to the electrical properties of graphene to influence.
They discovered that the shine of graphene with a mid-infrared laser for a so-called band-gap in graphene can induce. Such a band-gap makes it difficult for electrons to move through the material to flow, thereby effectively an electrical insulator is realized. In this way the electrical conductivity of graphene by means of lasers are arranged, which paves the way for opto-electronic circuits. Graphene would as a building block for optical communicatieschakelingen can serve.
