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Faculty receive WARF Named Professorships, Kellett Fellowships, and Romnes Awards
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UW-Madison: New technique for computer chips puts carbon nanotubes squarely in their place
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New method to produce graphene nanoribbons could promote use in telecommunications applications
University of Wisconsin–Madison researchers have fabricated graphene into the smallest ribbon structures to date, using a method that is said to make scaling-up simple. In tests with these tiny ribbons, the scientists discovered they were closing in on the properties they needed to move graphene toward usefulness in telecommunications equipment.
Image credit: University of Wisconsin−Madison
“Previous research suggested that to be viable for telecommunication technologies, graphene would need to be structured prohibitively small over large areas, (which is) a fabrication nightmare,” says Joel Siegel, a UW–Madison graduate student in physics professor Victor Brar’s group and co-lead author of the study. “In our study, we created a scalable fabrication technique to make the smallest graphene ribbon structures yet and found that with modest further reductions in ribbon width,
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University of Wisconsin–Madison researchers produced the smallest ribbons of graphene yet created, at about 12 nanometers in width, in efforts to use the all-carbon, ultra-thin and adaptable material to improve internet and other kinds of telecommunications performance. The structures, which act like tiny antennas that interact with light, are too small to see with the naked eye.From radio to television to the internet, telecommunications transmissions are simply information carried on light waves and converted to electrical signals.
Silicon-based fiber optics are currently the best structures for high-speed, long distance transmissions, but graphene an all-carbon, ultra-thin and adaptable material could improve performance even more.
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