Scientists discover diamonds can generate electricity

Diamond was thought to be incapable of producing electricity through mechanical deformation, but ultrathin flexible diamond membranes have now shown a strong and repeatable piezoelectric effect. The unexpected discovery could open the door to diamond-powered sensors, tiny energy systems, and self-powered medical implants. Scientists discover diamonds can generate electricity.

Scientists discover diamonds can generate electricity Science News from research organizations Scientists discover diamonds can generate electricity Date: August 31, 2026. Com Researchers at the University of Hong Kong (HKU) have discovered that ultrathin, highly flexible diamond membranes can produce a measurable piezoelectric response, challenging a scientific assumption that has stood for more than a century. The work was led by Professor Zhiqin Chu, Associate Professor in the Department of Electrical and Computer Engineering, and Professor Yuan Lin, Professor in the Department of Mechanical Engineering, Faculty of Engineering at the University of Hong Kong (HKU).

Diamond Breaks a Century-Old Rule Since the early 1900s, diamond has generally been classified as a non-piezoelectric material, meaning it was not expected to generate an electrical voltage when mechanically deformed. That limitation has shaped how diamond has been used in engineering. Despite its exceptional hardness, strength, chemical stability, high acoustic velocity, thermal conductivity, dielectric breakdown strength and ultrawide bandgap, diamond has typically served only as a structural support for other piezoelectric materials in microelectromechanical systems (MEMS).

For that reason, the idea of "generating electricity from diamonds" was long considered impractical.