Chinese and American researchers create the world's fastest rotor

Xinhua News Agency, Washington, July 21st, researchers from the United States and China have jointly created the world's fastest rotor, which can rotate more than 60 billion times per minute. The research results were published in the new US authoritative academic journal "Physics". Commentary Express.

Purdue University research team cooperated with Peking University, Tsinghua University and the Collaborative Innovation Center of Quantum Matter Science in China to synthesize a rotor resembling a 'dumbbell' using silicon material, 320 nm long and 170 nm wide.

Researchers use a laser to suspend the 'dumbbell' in a high vacuum. When the ring laser is turned on, the 'dumbbell' will rotate to become the rotor; when the linear laser is turned on, the 'dumbbell' will vibrate and can be used to measure small forces and torques.

Researchers say that by observing the rapid rotation of the rotor, vacuum friction and gravity can be studied. Similar equipment was previously used to measure gravitational constants and Earth density, and new equipment is expected to be applied to quantum mechanics and vacuum properties.