| Autor: |
Nathan Jeger-Madiot, Mauricio Hoyos, Jean-Luc Aider |
| Rok vydání: |
2022 |
| Předmět: |
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| Zdroj: |
The Journal of the Acoustical Society of America. 151:A272-A272 |
| ISSN: |
0001-4966 |
| DOI: |
10.1121/10.0011306 |
| Popis: |
The classic approaches to generate the Acoustic Radiation Force (ARF) in a standing wave cavity are based on the use of a specific height for the cavity and a narrow-band acoustic frequency to reach the resonance. We present a robust multi-node cavity working over a broadband range of frequency. This approach allows large acoustophoresis manipulations. The design of a transparent cavity and the use of a broadband ultrasonic transducer allowed the characterization of the acoustic energy and the comparison with a simple 1-D model. The acoustic properties of the system were estimated through the effects of the acoustic radiation forces on particles suspension. From the particle velocities induced by the ARF, measured with a Particle Image Velocimetry (PIV) approach, we deduced the acoustic energy over a large frequency range. The automation of the setup allowed the acquisition of a large amount of data to make parametric studies. The results show a wide continuous operating range for the acoustic radiation forces. Furthermore, the occurrence of the resonance peaks allows an increase by a factor ten of the force magnitude. This broadband effect also enables an accurate control of the node positions by tuning the proper acoustic frequency. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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