Laser-induced bubble dynamics inside and near a gap between a rigid boundary and an elastic membrane

Horvat, Darja; Orthaber, Uroš; Schille, Joerg; Hartwig, L.; Löschner, Udo; Vrečko, A.; Petkovšek, Rok

doi:10.1016/j.ijmultiphaseflow.2017.12.010

Cited by 19 publications

(7 citation statements)

References 17 publications

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“…However, for bubbles collapsing in more complex geometries, i.e. near a corner (Brujan et al 2018;Tagawa & Peters 2018), between two rigid boundaries (Chahine 1982;Kucherenko & Shamko 1986;Han et al 2018;Quah et al 2018), between a rigid boundary and an elastic wall (Horvat et al 2018) or in the presence of more than two boundaries (Zwaan et al 2007;Brujan, Takahira & Ogasawara 2019), the flow is greatly altered.…”

Section: Discussionmentioning

confidence: 99%

Jetting and shear stress enhancement from cavitation bubbles collapsing in a narrow gap

et al. 2019

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Section: Discussionmentioning

confidence: 99%

Jetting and shear stress enhancement from cavitation bubbles collapsing in a narrow gap

et al. 2019

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“…A similar setup was used as in (Horvat et al 2018) and was used for the pulsed laser experiment, shown in Fig. 5.…”

Section: Pulsed Laser Methodsmentioning

confidence: 99%

“…5 Pulsed laser experimental setup and its components: a liquid container, b beam expander and focusing optics, c beam splitters, d attenuator, e Q-swiched 1064 nm Nd:YAG laser, f energy meter, g trigger photodiode, h computer, i high-speed camera. A similar setup was used as in (Horvat et al 2018) along with the 4387 accelerometer (G) mounted on the tube housing, was used to monitor the impact deceleration. A 1.5-l reservoir for compressed air is mounted before the cylinders, to provide ample gas supply close to the cylinder inlets (omitted in figure for clarity).…”

Section: Tube Arrest Methodsmentioning

confidence: 99%

Experimental evaluation of methodologies for single transient cavitation bubble generation in liquids

et al. 2021

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Single bubble dynamics are of fundamental importance for understanding the underlying mechanisms in liquid–vapor transition phenomenon known as cavitation. In the past years, numerous studies were published and results were extrapolated from one technique to another and further on to “real-world” cavitation. In the present paper, we highlight the issues of using various experimental approaches to study the cavitation bubble phenomenon and its effects. We scrutinize the transients bubble generation mechanisms behind tension-based and energy deposition-based techniques and overview the physics behind the bubble production. Four vapor bubble generation methods, which are most commonly used in single bubble research, are directly compared in this study: the pulsed laser technique, a high- and low-voltage spark discharge and the tube arrest method. Important modifications to the experimental techniques are implemented, demonstrating improvement of the bubble production range, control and repeatability. Results are compared to other similar techniques from the literature, and an extensive report on the topic is given in the scope of this work. Simple-to-implement techniques are presented and categorized herein, in order to help with future experimental design. Repeatability and sphericity of the produced bubbles are examined, as well as a comprehensive overview on the subject, listing the bubble production range and highlighting the attributes and limitation for the transient cavitation bubble techniques. Graphic abstract

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“…Furthermore, the jetting behavior of a bubble near a boundary is influenced by the surface properties. Particularly in the field of medical laser applications, some researchers describe complex bubble dynamics while observing the interaction and behavior of cavitation bubbles near elastic boundaries (emulating mechanical properties of tissue) [19][20][21][22][23] . Thus, it is essential for many applications to effectively increase thereby minimizing detrimental effects, while maintaining the required range of jet speeds for the application of interest and removing strong dependence on a present target and its properties.…”

Section: Introductionmentioning

confidence: 99%

Soft material perforation via double-bubble laser-induced cavitation microjets

et al. 2020

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The resulting jet of two interacting laser-induced cavitation bubbles is optimized and studied as a technique for micro-scale targeting of soft materials. High controllability of double-bubble microjets can make such configuration favorable over single bubbles for applications where risk of ablation or thermal damage should be minimized such as in soft biological structures. In this study doublebubble jets are directed towards an agar gel-based skin phantom to explore the application of microscale injection and towards a soft paraffin to quantify targeting effectiveness of double-bubble over single-bubble jetting. The sharp elongation during the double-bubble process leads to fast, focused jets reaching average magnitudes of = 87.6 ± 9.9 / . When directed to agar, the penetration length and injected volume increase at approximately 250 µm and 5 nL per subsequent jets. Such values are achieved without the use of fabricated micro nozzles seen in existing needle-free laser injection systems. In soft paraffin, double-bubble jetting produces the same penetration length as single-bubble jetting, but with approximately a 45% reduction in damage area at a 3x greater target distance. Thus, double-bubble jetting can achieve smaller impact areas and greater target distances, potentially reducing collateral thermal damage and effects of strong shockwave pressures.

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Laser-induced bubble dynamics inside and near a gap between a rigid boundary and an elastic membrane

Cited by 19 publications

References 17 publications

Jetting and shear stress enhancement from cavitation bubbles collapsing in a narrow gap

Jetting and shear stress enhancement from cavitation bubbles collapsing in a narrow gap

Experimental evaluation of methodologies for single transient cavitation bubble generation in liquids

Soft material perforation via double-bubble laser-induced cavitation microjets

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