WASHINGTON: Researchers have created the world’s thinnest light bulb using graphene, an atomically thin and perfectly crystalline form of carbon, as a filament.
Led by Young Duck Kim, a postdoctoral research scientist in James Hone’s group at Columbia University School of Engineering, a team of scientists from Columbia, Seoul National University, and Korea Research Institute of Standards and Science said that they have demonstrated — for the first time — an on-chip visible light source using graphene as a filament.
They attached small strips of graphene to metal electrodes, suspended the strips above the substrate, and passed a current through the filaments to cause them to heat up.
“We’ve created what is essentially the world’s thinnest light bulb,” said Hone, Wang Fon-Jen professor of mechanical engineering at Columbia Engineering.
