Crumpled graphene makes ultra-sensitive cancer DNA
detector

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.