Injectable, sand grain-sized gel sensor can detect brain cancer and trauma

Researchers at Huazhong University of Science and Technology have developed a novel gel-based sensor that can be implanted into the brain. About the size of a grain of sand, the new sensor is “squishy” and can break down in the body in just over a month.

When tested on rats and pigs, the sensor was found to work just as well as conventional wired sensors. The sensor can monitor key health metrics like temperature, pH, and pressure.“It is quite likely this technology will be useful for people in medical settings,” explained study co-author Yueying Yang, a biomedical engineer at HUST in

Scientists have been working on developing implantable brain sensors for many years. However, most of these devices use wires to transmit data to clinicians. These gel sensors alter their shape in response to varying temperatures, pressures, and pH levels. They also react to vibrations caused by changes in blood flow within the brain.

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