Acoustic radiation torque on a spheroidal droplet in standing Bessel beams

作     者：ZANG Yuchen LIN Weijun SU Chang WU Pengfei ZANG Yuchen;LIN Weijun;SU Chang;WU Pengfei

作者机构：Institute of AcousticsChinese Academy of SciencesBeijing 100190 University of Chinese Academy of SciencesBeijing 100049 

出 版 物：《Chinese Journal of Acoustics》 (声学学报（英文版）)

年 卷 期：2021年第40卷第4期

页      面：566-582页

核心收录：

学科分类：07[理学] 082403[工学-水声工程] 08[工学] 070206[理学-声学] 0824[工学-船舶与海洋工程] 0702[理学-物理学] 

基　　金：the National Natural Science Foundation of China(81527901,11604361,91630309) the National Key Research and Development Project(2018YFC0114900) the Key Research Program of Frontier Sciences,CAS(ZDBS-LY-SLH037) 

主　　题：Bessel compressible beam 

摘      要：In the actual acoustic manipulation,a droplet often takes the shape of a spheroid due to the combined effects of the acoustic radiation force,surface tension and gravitational force,which can be rotated by the torque in helicoidal sound *** on the sound scattering theory,the scattering coefficients of a spheroidal droplet in standing Bessel beams are solved using the partial-wave series expansion method,and the analytical expression of the acoustic radiation torque is also *** this basis,the results for both the incompressible and the compressible spheroidal droplets are calculated *** simulated results show that the acoustic radiation torque on the incompressible droplet is more closely related to the half-cone angle of the beam,while the torque on the compressible droplet is more dependent on specific *** growth of the beam order will increase the peaks of the acoustic radiation torque,but it is difficult to obtain an obvious radiation torque for compressible droplets at low and medium *** results of this study are expected to provide a theoretical guide for manipulating droplets using helicoidal acoustic beams.