Laser-Generated Cavitation in Absorbing Liquid Induced by Acoustic Diffraction

Frenz, Martin; Paltauf, Guenther; Schmidt-Kloiber, H.

doi:10.1103/physrevlett.76.3546

Cited by 89 publications

(70 citation statements)

References 12 publications

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“…Laser-induced cavitation has been used for a broad range of applications (Ibrahimkutty et al 2012;Lohse 1998;Frenz et al 1996). Recently, Cui and Yang (2011) reported a heat enhancement effect during photoacoustic imaging (PAI)-guided HIFU therapy.…”

Section: Laser-enhanced Ablationmentioning

confidence: 99%

Cavitation Control and Applications

Qiao

Nan

et al. 2015

Cavitation in Biomedicine

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Keywords Effect of acoustic parameters Á Effect of ambient temperature and pressure Á Constrained cavitation Á Spatial and temporal control Á Cavitation dosage control IntroductionCavitation is an important phenomenon that can occur both during diagnostic and therapeutic applications. It is not only an indicator of the transient high pressure and temperature induced by intense bubble collapse, but it also mediates mechanical and thermal effects. As far as mechanical effects, collapsing bubbles can emit shock waves and liquid jets, which are considered the main mechanisms that cause mechanical damage (Kodama and Tomita 2000). Regarding thermal effects, cavitation can enhance heating by confining the acoustic energy within the cavitation region, and it can also enhance viscous absorption at the bubble surface and generate high-frequency broadband harmonics, which have higher heat absorption coefficients. Therefore, cavitation has great potential to enhance therapeutic effi-

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Section: Laser-enhanced Ablationmentioning

confidence: 99%

Cavitation Control and Applications

Qiao

Nan

et al. 2015

Cavitation in Biomedicine

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“…However, other researchers [2,[5][6][7][8][9][10] reported there was only a positive compression wave, which are induced by free-running holmium lasers (pulse widths of several hundreds μs). However, our observation can be explained in terms of momentum conservation.…”

mentioning

confidence: 95%

“…These bubbles can directly affect the laser ablation process [3]. After formation, the CB undergoes multiple cycles of expansion and collapse, accompanying shockwave emission [2,4]. However, many studies have reported that this evolution is not sequential but transient.…”

mentioning

confidence: 97%

“…However, many studies have reported that this evolution is not sequential but transient. All images must be reconstructed from different CBs induced by pulsed lasers with identical parameters [5] by performing shadow and Schlieren photography [2,[4][5][6][7][8][9][10]. However, because of the poor pulse-to-pulse repeatability of these laser sources, the pulse width, pulse energy and response time always fluctuate even under the same ambient environments.…”

mentioning

confidence: 99%

“…When the optical fiber is not in direct contact with the target tissue, cavitation bubbles (CB) are formed by absorption of the laser radiation by the liquid separating the fiber tip and the tissue surface [2]. These bubbles can directly affect the laser ablation process [3].…”

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confidence: 99%

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Underwater holmium-laser-pulse-induced complete cavitation bubble movements and acoustic transients

2011

Chin. Sci. Bull.

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The complete evolution of holmium-laser-pulse-induced cavitation bubble movements and acoustic transients underwater are investigated experimentally. The laser was single fiber-guided and had a 300 mJ pulse energy and 300 μs pulse duration (full width at half-maximum). In our experiments, more than four oscillations and four acoustic transients were demonstrated. 272 μs after laser onset, the cavitation bubbles reached their maximum transverse and longitudinal lengths of 2046 and 1914 μm, respectively. The maximum transverse and longitudinal bubble wall velocities were 28.9 and 39.2 m/s at 560 and 528 μs after laser onset, respectively. This investigation will be helpful to make good use of cavitation effect in medical applications of holmium laser pulses. cavitation bubble, acoustic transient, holmium laser pulse Citation:Lü T, Li Z J. Underwater holmium-laser-pulse-induced complete cavitation bubble movements and acoustic transients.

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