Selective detection of water pollutants using a differential aptamer-based graphene biosensor.

ABSTRACT: Graphene field-effect transistor (GFET) sensors are an attractive analytical tool for the detection of water pollutants. Unfortunately, this application has been hindered by the sensitivity of such sensors to nonspecific disturbances caused by variations of environmental conditions. Incorporation of differential designs is a logical choice to address this issue, but this has been difficult for GFET sensors due to the impact of fabrication processes and material properties. This paper presents a differential GFET affinity sensor for the selective detection of water pollutants in the presence of nonspecific disturbances. This differential design allows for minimization of the effects of variations of environmental conditions on the measurement accuracy. In addition, to mitigate the impact of

SUBMITTER: Li Y 

PROVIDER: S-EPMC7509988 | biostudies-literature | 2019 Feb

REPOSITORIES: biostudies-literature