Breakthrough Twist: The Tiny Diamond That Detects What the Body Hides

Researchers in Germany have developed a tiny diamond sensor that measures heart activity remotely using magnetic fields, without direct skin contact. The device operates at room temperature, is portable and flexible, and could help patients with burns or skin injuries. Initial experiments showed high accuracy, and the researchers aim to improve the signal strength a hundredfold.

Researchers at Johannes Gutenberg University in Mainz, Germany, have unveiled an innovative medical development: a tiny diamond-based sensor capable of measuring heart activity remotely, without direct skin contact. The sensor, smaller than half a cubic millimeter, picks up the natural magnetic fields generated with each heartbeat, which pass through body tissues undisturbed. Unlike previous methods requiring bulky equipment with complex cooling systems, the new device operates stably at room temperature and is portable and flexible. The significant advantage is for patients suffering from severe burns or extensive skin injuries, who cannot undergo standard ECG tests requiring electrodes and patches. Initial experiments confirmed high accuracy in detecting heartbeats. The researchers are now working on developing components to boost the signal strength by more than a hundredfold, aiming to achieve a level of detail comparable to a full ECG. The research is part of a broader project in Germany, whose original goal was integrating sensors into delicate brain surgeries. The researchers estimate that in the future, the sensor could be adapted to read brain signals for early diagnosis of epilepsy and myocarditis, as well as for fetal heart rate monitoring without invasive procedures.