The fastest-spinning object ever made could help spot quantum friction in a vacuum
A sensor made with a swiftly revolving nanoparticle can detect minute torques
![researchers working on torque sensor](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2020/01/011020_ec_torque-sensor_feat.jpg?fit=1028%2C579&ssl=1)
A new torque sensor that uses a fast-spinning nanoparticle can detect tiny forces, say scientists Tongcang Li (left), Jonghoon Ahn (right) and colleagues.
Vincent Walter, Purdue University