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physics.app-ph2019★ 276 cited
Ultrasensitive torque detection with an optically levitated nanorotor
Jonghoon Ahn, Zhujing Xu, Jaehoon Bang +3
Torque sensors such as the torsion balance enabled the first determination of the gravitational constant by Cavendish and the discovery of Coulomb's law. Torque sensors are also wi…
physics.app-ph2018★ 335 cited
Optically Levitated Nanodumbbell Torsion Balance and GHz Nanomechanical Rotor
Jonghoon Ahn, Zhujing Xu, Jaehoon Bang +5
Levitated optomechanics has great potentials in precision measurements, thermodynamics, macroscopic quantum mechanics and quantum sensing. Here we synthesize and optically levitate…