Researchers at Kyoto University in Japan have developed a surface-insulated, magnetically aligned graphite particle plate that achieves stable diamagnetic levitation above ordinary permanent magnets, oscillating persistently above the magnet like a miniature flying carpet. A thin glass coating on the particles blocks the conductive currents that would otherwise suppress the levitation effect.

“I was drawn to diamagnetic levitation as I found the phenomenon to be somewhat counter-intuitive and even exotic… I am amused by an object floating silently without any active drive, unlike a bird flapping its wings,” said corresponding author Kazuyuki Takeda.

During testing, the levitating plate unexpectedly revealed a second use. “An actual earthquake hit us while we were recording the motion of the levitating plate. As it bobbed up and down we detected a huge impulse… This unintentionally became our first ‘quake-sensing’ event,” Takeda said, pointing to a potential future application for the platform as a passive motion sensor.

Journal: Analysis & Sensing
DOI: 10.1002/anse.70099
Article Title: Diamagnetically Levitated Sensing Platforms Made With Surface-Insulated and Magnetically Aligned Graphite Particles
Publication Date: 2-Jul-2026
Funding: Japan Society for the Promotion of Science, Japan Science and Technology Agency, Okinawa Institute of Science and Technology Graduate University, Japanese Cross-Ministerial Strategic Innovation Promotion Program

Source: EurekAlert