Short-wavelength ultraviolet dosimeters based on DNA nanostructure-modified graphene field-effect transistors.

Direct and sensitive short-wavelength ultraviolet (UVC) dosimeters could provide a safer disinfection environment against viruses. We developed direct, quantitative, specific and highly sensitive UVC dosimeters based on DNA nanostructure-modified graphene field-effect transistors. Detectable doses of the dosimeters range from 0.005 to 6 kJ m-2 and such dosimeters have at least 5 times better sensitivity than the current direct UV dosimeters.