This isn’t the first time nanoporous graphene has been prepared. Scientists have used a top-down approach, poking holes into graphene with a laser beam. But holes made this way tend to be too big, don’t have the desired precision, and don’t result in a semiconducting material. Other kinds of nanoporous graphene made via the bottom-up approach of chemical synthesis have not been reported as working in devices yet. “In general, fabrication of electronic devices from nanoscale graphene structures is very challenging,” says Alexander Sinitskii, a chemist who studies graphene nanoribbons at the University of Nebraska, Lincoln. “But this new material can be efficiently translated into devices: Three out of every four transistors made with the nanoporous graphene work, which is pretty impressive,” he says.
by Bethany Halford |
April 12, 2018