Pulling force of acoustic-vortex beams on centered elastic spheres based on the annular transducer model

作     者：Yuzhi Li Qingdong Wang Gepu Guo Hongyan Chu Qingyu Ma Juan Tu Dong Zhang 李禹志;王青东;郭各朴;褚红燕;马青玉;屠娟;章东

作者机构：School of Physics and TechnologyNanjing Normal UniversityNanjing 210023China College of Ocean Science and EngineeringShandong University of Science and TechnologyQingdao 266590China Institute of AcousticsNanjing UniversityNanjing 210093China 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2020年第29卷第5期

页      面：318-325页

核心收录：

学科分类：07[理学] 08[工学] 070206[理学-声学] 0802[工学-机械工程] 0803[工学-光学工程] 0702[理学-物理学] 

基　　金：Project supported by the National Natural Science Foundation of China(Grant Nos.11934009 11974187 and 11604156) 

主　　题：acoustic radiation force pulling force acoustic-vortex beams annular transducer model acoustic scattering 

摘      要：To solve the difficulty of generating an ideal Bessel beam,an simplified annular transducer model is proposed to study the axial acoustic radiation force(ARF)and the corresponding negative ARF(pulling force)exerted on centered elastic spheres for acoustic-vortex(AV)beams of arbitrary *** on the theory of acoustic scattering,the axial distributions of the velocity potential and the ARF for AV beams of different orders generated by the annular transducers with different physical sizes are *** is proved that the pulling force can be generated by AV beams of arbitrary orders with multiple axial *** pulling force is more likely to exert on the sphere with a smaller k0a(product of the wave number and the radius)for the AV beam with a bigger topological charge due to the strengthened off-axis acoustic *** pulling force decreases with the increase of the axial distance for the sphere with a bigger *** pulling force areas with wider axial regions can be formed by AV beams using a bigger-sized annular *** theoretical results demonstrate the feasibility of generating the pulling force along the axes of AV beams using the experimentally applicable circular array of planar transducers,and suggest application potentials for multi-position stable object manipulations in biomedical engineering.