Acoustic radiation torque of an acoustic-vortex spanner exerted on axisymmetric objects

• Published in: Applied physics letters Vol. 112; no. 25
• Main Authors: Li, Yuzhi, Guo, Gepu, Tu, Juan, Ma, Qingyu, Guo, Xiasheng, Zhang, Dong, Sapozhnikov, Oleg A.
• Format: Journal Article
• Language: English
• Published: Melville American Institute of Physics 18.06.2018
• Subjects: Acoustics; Angular momentum; Applied physics; Axisymmetric bodies; Rotating disks; Rotation; Sound waves; Torque

Based on the analysis of the wave vector of an acoustic-vortex (AV) spanner, the radiation torque of object rotation is investigated. It is demonstrated that the rotation of an axisymmetric disk centered on the AV spanner is mainly driven by the acoustic radiation force. The radiation torque exerted...