Graphene and gold are now being used in ultrasensitive biosensors to detect diseases at the molecular level with near perfect efficiency.
In a paper published in the journal Nature Nanotechnology, scientists with the University of Minnesota explain how they developed ultrasensitive biosensors capable of probing protein structures and, therefore, able to detect disorders related to protein misfolding.
Such disorders range from Alzheimer's disease in humans to chronic wasting disease and mad cow disease in animals.
"In order to detect and treat many diseases we need to detect protein molecules at very small amounts and understand their structure," said Sang-Hyun Oh, lead researcher on the study, in a media statement. "Currently, there are many technical challenges with that process. We hope that our device using graphene and a unique manufacturing process will provide the fundamental research that can help overcome those challenges."