Related Experiment Video
Updated: May 11, 2026
Development and Functionalization of Electrolyte-Gated Graphene Field-Effect Transistor for Biomarker Detection
Published on: February 1, 2022
Impedimetric graphene-based biosensors for the detection of polybrominated diphenyl ethers
Albert Gutés1, Byung-Yang Lee, Carlo Carraro
1Department of Chemical and Biomolecular Engineering, University of California at Berkeley, 94720 Berkeley, CA, USA.
Abstract:
Single-layer graphene, decorated with Au nanoparticles, and a specially designed peptide are used for the first time in the detection of decabrominediphenyl ether using impedance spectroscopy. Biosensor calibration is presented, showing a good linear response from 5% to saturated dissolutions (100 ppt). Selectivity towards brominated species is demonstrated by lack of response to molecules with similar structures but without any bromines.
