Carbon nanostructures such as single-walled carbon nanotubes and graphene film, due to their large surface carbon atoms that are highly responsive to surface adsorption events and unique electrical properties, are ideal materials for electronic, field-effect transistor/chemiresistor sensors. Their ultra-small size makes possible developing high density arrays of individually addressable nanostructures for simultaneous analysis of a range of different species and massive redundancy to increase the measurement accuracy and increase signal to noise ratio. Further, their compatibility with modern microfabrication technologies, facile functionalization with molecular recognition elements make them promising candidates for bio/chemical sensors applications.This paper will present our recent results on development of electronic nanobiosensors based on SWNTs and graphene film combined with biological receptors such as aptamers, antibodies and binding proteins, for label-free, highly sensitive, selective, rapid and cost-effective detection of pathogens and toxins with potential for applications in monitoring pathogens and toxins in drinking water and food.

Electronic nanobiosensors for pathogens and toxins

245th National Meeting (2013)

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