Sun Aug 17 00:15:00 UTC 2025: **FOR IMMEDIATE RELEASE**
**Living Sensors: Scientists Turn Bacteria into Self-Powered Chemical Detectors**
**London/Beijing – August 17, 2025** – In a groundbreaking development, researchers from Imperial College London and Zhejiang University have successfully engineered bacteria to function as self-powered chemical sensors that can directly interface with electronic devices. This innovation, detailed in a study released today, paves the way for affordable and programmable bioelectronic devices with a wide range of potential applications.
Traditional biosensors often face limitations in terms of fragility, cost, and response time, especially in complex environments. The new approach utilizes genetically modified *Escherichia coli* bacteria as “containers” hosting three key biosensor modules: a sensing module to detect specific compounds, an information processing module to amplify signals, and an output module to produce detectable electrical signals.
“This is a significant step towards creating robust and versatile biosensors,” said a lead researcher on the project. “By harnessing the power of synthetic biology and bioelectrochemistry, we have created a platform that overcomes many of the limitations of existing sensor technologies.”
The team demonstrated the technology by creating two functional biosensors. One can detect arabinose, a common plant sugar, while the other identifies mercury ions in water, even at concentrations below the World Health Organization’s safety limit. The researchers also showed the ability to create a logic gate where bacteria only generate a signal when two specific molecules are present, which opens doors to more complex biological computation.
The research team sees potential applications in environmental monitoring, medical diagnostics, and industrial process control. The bacteria-based sensors can operate inside contaminated samples. Because whole-cell biosensors use living microorganisms, they can maintain and repair themselves. Further development of this technology could lead to the creation of field-deployable sensors for rapid and cost-effective detection of various chemicals and pollutants.
First Piper 