Work

On the instability of single-axis acoustic levitation under radial perturbations

Year: 2024

Type: article

Abstract: Acoustic levitation is widely used in non-container measurement and non-contact manipulation. Particles in the single-axis acoustic levitation are easily unstable in the radial direction under external perturbations. In order to explore the instability in the acoustic levitation during radial perturbations, a nonlinear acoustic levitation model considering the coupling of radial and axial vibration is proposed to analyze the dominant factors influencing the levitation stability, an acoustic levitation system consisting of a transducer and a plane reflector is established, and high-speed photography is used to observe the vibration behavior of the particle with large radial vibration and the levitation stability. The simulation results are compared and verified with the experiments, which indicate that the reduction in axial trapping stiffness due to radial vibration plays a vital role in the levitation instability. The present model can characterize the radial anti-interference ability of different levitators as well as predict the movement trajectories of levitated particles after being disturbed, which is helpful to optimize the design of acoustic levitators and provide guidance for acoustic manipulation.

Source: Journal of Applied Physics

DOI: 10.1063/5.0218163

Authors: Xiaozhen Wang, Qin Chang, Pengfei Wu, Delong Xu, Weijun Lin, Hao Chen

Institutions: Chinese Academy of Sciences, Institute of Acoustics, University of Chinese Academy of Sciences

Language: English

Topic: Microfluidic and Bio-sensing Technologies

Subfield: Biomedical Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $3,500

Funder: Youth Innovation Promotion Association of the Chinese Academy of Sciences