Crumpled graphene makes ultra-sensitive cancer DNA detector
(PHYSorg.com Nanotechnology)

Graphene-based biosensors could usher in an era of liquid biopsy, detecting DNA cancer markers circulating in a patient`s blood or serum. But current designs need a lot of DNA. In a new study, crumpling graphene makes it more than ten thousand times more sensitive to DNA by creating electrical `hot spots,` researchers at the University of Illinois at Urbana-Champaign found.