Abstract
Evidence is reviewed, from theory and experiment, that biological systems can be affected by ultrasound at low levels, if resonant gas bodies are present. In a suspension of cells or other particles a pulsating gas bubble causes the particles to migrate toward its surface via radiation force. This motion, in addition to acoustic micro-streaming, transports particles into the bubble near-field where they are subjected to highly localized stress fields. In plant leaves containing gas-filled channels, the ultrasonic intensity required to produce cell death varies with frequency, showing minima in ranges corresponding roughly to calculated frequencies for resonance of the channels.
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References
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© 1982 Martinus Nijhoff Publishers, The Hague
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Nyborg, W.L., Miller, D.L. (1982). Biophysical implications of bubble dynamics. In: van Wijngaarden, L. (eds) Mechanics and Physics of Bubbles in Liquids. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-7532-3_1
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DOI: https://doi.org/10.1007/978-94-009-7532-3_1
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-009-7534-7
Online ISBN: 978-94-009-7532-3
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