Sound field transport manipulation within a subwavelength straight tube structure

Cong Chen; Ruoqin Zhang; Zhiyuan Li

doi:10.1117/12.3005254

20 October 2023 Sound field transport manipulation within a subwavelength straight tube structure

Cong Chen, Ruoqin Zhang, Zhiyuan Li

Proceedings Volume 12916, Third International Conference on Signal Image Processing and Communication (ICSIPC 2023); 1291618 (2023) https://doi.org/10.1117/12.3005254
Event: Third International Conference on Signal Image Processing and Communication (ICSIPC 2023), 2023, Kunming, China

Abstract

The nonlinear action of acoustic waves in a medium generates acoustic radiation forces, which can be used to manipulate particles and droplets in gases. The acoustic manipulation technique can manipulate larger objects in media without contact, and therefore has been widely used in chemical analysis, contactless transport and bioreactors. In this paper, a subwavelength straight tube acoustic manipulation device is designed to generate a standing wave acoustic field inside a finite length circular waveguide by exciting a single low-order mode with two small transducers. It is found that the position of the particles inside the subwavelength tube can be controlled by switching the frequency, so that the particle transport inside the subwavelength tube based on the frequency control of the acoustic field can be realized. This work then uses a flexible PVC pipe and successfully controls the particle movement inside the PVC pipe with different bending angles, verifying the applicability of the method of subwavelength pipe particle transport based on acoustic field frequency control. Finally, this work further designs an acoustic particle collision device based on the above method using two sets of acoustic sources. This work further expands the use scenario of subwavelength pipe-enhanced acoustic tweezers, which is expected to deepen the physical understanding of the acoustic field on matter interactions and develop new miniaturized acoustic manipulation devices inside pipeline structures.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Cong Chen, Ruoqin Zhang, and Zhiyuan Li "Sound field transport manipulation within a subwavelength straight tube structure", Proc. SPIE 12916, Third International Conference on Signal Image Processing and Communication (ICSIPC 2023), 1291618 (20 October 2023); https://doi.org/10.1117/12.3005254

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KEYWORDS

Acoustics

Particles

Pipes

Waveguides

Optical spheres

Polystyrene

Standing waves

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