Engineering and Technology

Scalable graphene sensor array for real-time toxins monitoring in flowing water

A. Maity, H. Pu, et al.

Discover groundbreaking research by Arnab Maity and colleagues, who have developed a scalable graphene-based field-effect transistor (GFET) sensor array for real-time monitoring of heavy metals and *E. coli* in drinking water, ensuring safer access to this vital resource.

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Abstract

Continuous monitoring of toxins in flowing water is crucial for drinking water safety. Two-dimensional (2D) electronic sensors offer promise but suffer from device-to-device variations. This research combines wet transfer, impedance and noise measurements, and machine learning to create a scalable graphene-based field-effect transistor (GFET) sensor array. The array enables real-time detection of heavy-metal ions (lead and mercury) and *E. coli* bacteria in flowing tap water, using a quality control protocol to improve sensor reliability and accuracy for pollutant monitoring.

Publisher

Nature Communications

Published On

Jul 13, 2023

Authors

Arnab Maity, Haihui Pu, Xiaoyu Sui, Jingbo Chang, Kai J. Bottum, Bing Jin, Guihua Zhou, Yale Wang, Ganhua Lu, Junhong Chen

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