Cavitation bubble behavior and bubble-shock wave interaction near a gelatin surface as a study of in vivo bubble dynamics

Kodama, Tetsuya; Tomita, Yukio

doi:10.1007/s003400050022

Cited by 158 publications

(111 citation statements)

References 0 publications

Supporting

Mentioning

102

Contrasting

Unclassified

Order By: Relevance

“…6 (top)] which holds down to the smallest bubbles detectable. A similar scaling for bubbles between 0.1 and 1 mm has been found by Kodama and Tomita [18]. Direct optical measurements of the diameter of the jet are difficult because of the strongly curved gaseous layer covering the jet.…”

supporting

confidence: 81%

Shock-Wave-Induced Jetting of Micron-Size Bubbles

2003

View full text Add to dashboard Cite

Free gas bubbles in water with radii between 7 and 55 m subjected to a shock wave exhibit a liquid jetting phenomenon with the jet pointing in the direction of the propagating shock wave. With increasing bubble radius, the length of the jet tip increases and a lower estimate of the averaged jet velocity increases linearly from 20 to 150 m=s. At a later stage, the jet breaks up and releases micronsize bubbles. In the course of shock wave permeabilization and transfection of biological cells, this observation suggests a microinjection mechanism when the cells are near bubbles exposed to a shock wave.

show abstract

supporting

confidence: 81%

Shock-Wave-Induced Jetting of Micron-Size Bubbles

2003

View full text Add to dashboard Cite

show abstract

“…Strikingly, these mists exactly coincide with the instants of predicted shockwave radiation. Namely, the spark (or primary) shockwave is emitted at the spark generation initiating the bubble growth, and collapse (or secondary) shockwaves are radiated at the bubble collapse and subsequent col- lapses of rebound bubbles [14]. Although these shockwaves were not directly observable with the present setup, their exact synchronization with microbubbles clearly discloses a causal relation.…”

mentioning

confidence: 72%

Cavitation Bubble Dynamics inside Liquid Drops in Microgravity

et al. 2006

View full text Add to dashboard Cite

[Almost identical to PRL 97, 094502 (2006)] We studied spark-generated cavitation bubbles inside water drops produced in microgravity. High-speed visualizations disclosed unique effects of the spherical and nearly isolated liquid volume. In particular, (1) toroidally collapsing bubbles generate two liquid jets escaping from the drop, and the "splash jet" discloses a remarkable broadening. (2) Shockwaves induce a strong form of secondary cavitation due to the particular shockwave confinement. This feature offers a novel way to estimate integral shockwave energies in isolated volumes. (3) Bubble lifetimes in drops are shorter than in extended volumes in remarkable agreement with herein derived corrective terms for the Rayleigh-Plesset equation.

show abstract

“…Lord Rayleigh [87] derived this equation based on energy considerations. An alternative approach based on the Bernoulli equation is followed here (figure 22).…”

Section: Appendix a Basic Bubble Dynamics Theorymentioning

confidence: 99%

Bubbles with shock waves and ultrasound: a review

2015

View full text Add to dashboard Cite

The study of the interaction of bubbles with shock waves and ultrasound is sometimes termed ‘acoustic cavitation'. It is of importance in many biomedical applications where sound waves are applied. The use of shock waves and ultrasound in medical treatments is appealing because of their non-invasiveness. In this review, we present a variety of acoustics–bubble interactions, with a focus on shock wave–bubble interaction and bubble cloud phenomena. The dynamics of a single spherically oscillating bubble is rather well understood. However, when there is a nearby surface, the bubble often collapses non-spherically with a high-speed jet. The direction of the jet depends on the ‘resistance' of the boundary: the bubble jets towards a rigid boundary, splits up near an elastic boundary, and jets away from a free surface. The presence of a shock wave complicates the bubble dynamics further. We shall discuss both experimental studies using high-speed photography and numerical simulations involving shock wave–bubble interaction. In biomedical applications, instead of a single bubble, often clouds of bubbles appear (consisting of many individual bubbles). The dynamics of such a bubble cloud is even more complex. We shall show some of the phenomena observed in a high-intensity focused ultrasound (HIFU) field. The nonlinear nature of the sound field and the complex inter-bubble interaction in a cloud present challenges to a comprehensive understanding of the physics of the bubble cloud in HIFU. We conclude the article with some comments on the challenges ahead.

show abstract

Cavitation bubble behavior and bubble-shock wave interaction near a gelatin surface as a study of in vivo bubble dynamics

Cited by 158 publications

References 0 publications

Shock-Wave-Induced Jetting of Micron-Size Bubbles

Shock-Wave-Induced Jetting of Micron-Size Bubbles

Cavitation Bubble Dynamics inside Liquid Drops in Microgravity

Bubbles with shock waves and ultrasound: a review

Contact Info

Product

Resources

About