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

Li Yuzhi¹, Wang Qingdong², Guo Gepu¹, Chu Hongyan¹, Ma Qingyu^{1, †}, Tu Juan³, Zhang Dong³

Axial profiles of the velocity potential for AV beams with the topological charges of (a) 0, (b) 1, (c) 2, and (d) 6 generated by the annular transducer with W = 10 mm and r_base = 10 mm.