Though resembling conventional watch batteries in appearance, these ultra-thin power sources are designed for critical applications, including pacemakers, hearing aids, satellites, deep space missions, and remote sensors.

The pioneering technology is the result of collaboration between nuclear fusion experts at the UK Atomic Energy Authority (UKAEA) and the University of Bristol. The batteries are crafted from lab-grown diamonds paired with an ultra-thin layer of radioactive carbon-14, a byproduct of nuclear reactors.

Neil Fox from the University of Bristol’s School of Chemistry explained the choice of carbon-14 as the source material:

“Carbon-14 emits short-range radiation, which is quickly absorbed by any solid material. While this would make it hazardous to ingest or touch directly, encapsulating it in diamond ensures that no radiation escapes.”

The diamond, acting as a semiconductor, converts the radioactivity into electricity while its unparalleled hardness prevents any radioactive leakage. This innovative design not only ensures safety but also delivers unmatched durability.

The development marks a significant step in the search for long-lasting and eco-friendly energy solutions, with potential applications in healthcare and space exploration.