Standing wave pressure fields generated in an acoustic levitation chamber

Andrew Hancock; John S. Allen; Dustin Edward Kruse; Paul A. Dayton; Christian M. Kargel; Michael F. Insana

doi:10.1117/12.428233

30 May 2001 Standing wave pressure fields generated in an acoustic levitation chamber

Andrew Hancock, John S. Allen, Dustin Edward Kruse, Paul A. Dayton, Christian M. Kargel, Michael F. Insana

Proceedings Volume 4325, Medical Imaging 2001: Ultrasonic Imaging and Signal Processing; (2001) https://doi.org/10.1117/12.428233
Event: Medical Imaging 2001, 2001, San Diego, CA, United States

Abstract

We are developing an acoustic levitation chamber for measuring adhesion force strengths among biological cells. Our research has four phases. Phase I, presented here, is concerned with the design and construction of a chamber for trapping cell-sized microbubbles with known properties in acoustic standing waves, and examines the theory that describes the standing wave field. A cylindrical chamber has been developed to generate a stable acoustic standing wave field. The pressure field was mapped using a 0.4-mm needle hydrophone, and experiments were performed using 100 micron diameter unencapsulated air bubbles, 9 micron diameter isobutane-filled microbubbles, and 3 micron diameter decafluorobutane (C₄F₁₀)-filled microbubbles, confirming that the net radiation force from the standing wave pressure field tends to band the microbubbles at pressure antinodes, in accordance with theory.

Citation Download Citation

Andrew Hancock, John S. Allen, Dustin Edward Kruse, Paul A. Dayton, Christian M. Kargel, and Michael F. Insana "Standing wave pressure fields generated in an acoustic levitation chamber", Proc. SPIE 4325, Medical Imaging 2001: Ultrasonic Imaging and Signal Processing, (30 May 2001); https://doi.org/10.1117/12.428233

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