Particle transport along the circular trajectory of a semi-infinite Bessel acoustic beam

Author:

Zhou Qinxin,Ren Xuemei,Shi Yubo,Xu ZhengORCID

Abstract

Abstract We explored the propagation of semi-infinite accelerating Bessel beams along circular trajectories beyond the paraxial approximation. Until now, the complex nature of these beams has posed a challenge for the development of construction methods, resulting in primarily theoretical research within the field of acoustics. In this study, we successfully achieved experimental realization of these beams in the acoustic domain using our previously proposed acoustic Fourier transform system, which involves phase modulation through a holographic lens and Fourier transformation through a cylindrical focusing reflector. Our results demonstrate that these beams exhibit accelerated propagation along circular trajectories. Moreover, we experimentally generated and directly observed these highly curved beams during the transportation of micro-particles, where they undergo substantial bending at large angles.

Funder

Shanghai Natural Science Foundation

Shanghai Science & Technology Development Foundation

National Natural Science Foundation of China

Fundamental Research Funds for the Central Universities

Publisher

IOP Publishing

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