Shock wave induced interaction of microbubbles and boundaries

In the present study we experimentally investigate bubble dynamics after laser induced shock wave exposure in the vicinity of salt crystals suspended in water. High-speed microscopic images show aspherical collapse and rebound of single and multiple bubbles with initial radii between 5 and 150 μm. Radius time curves of bubbles close to one boundary are compared to the bubble dynamics of a spherical model. The bubble dynamics strongly depends on the position of neighboring bubbles and on the number of boundaries given by the surrounding salt grains. After excitation bubbles are drawn to the closest particles in their vicinity. Subsequent application of shock waves leads to jet formation against the rigid boundaries. The bubbles often tend to form in or migrate into cracks on the crystal surfaces and sometimes lead to the breakage of particles due to rapid bubble dynamics. Similar behavior may occur in other cases where material damage is induced by shock waves in liquids such as lithotripsy or shock wave c...

[1]  W. Lauterborn,et al.  Cinematographic observation of the collapse and rebound of a laser-produced cavitation bubble near a wall , 2003, Journal of Fluid Mechanics.

[2]  Bernhard Wolfrum,et al.  Observations of pressure-wave-excited contrast agent bubbles in the vicinity of cells , 2002 .

[3]  C. Ohl.  Cavitation inception following shock wave passage , 2002 .

[4]  Vasan Venugopalan,et al.  Role of laser-induced plasma formation in pulsed cellular microsurgery and micromanipulation. , 2002, Physical review letters.

[5]  G. S. Keen,et al.  The final stage of the collapse of a cavitation bubble close to a rigid boundary , 2002, Physics of Fluids.

[6]  W Eisenmenger,et al.  The mechanisms of stone fragmentation in ESWL. , 2001, Ultrasound in medicine & biology.

[7]  B. Sturtevant,et al.  Fracture mechanics model of stone comminution in ESWL and implications for tissue damage. , 2000, Physics in medicine and biology.

[8]  Claus-Dieter Ohl,et al.  Experimental and Theoretical Bubble Dynamics , 2007 .

[9]  D. C. Emmony,et al.  A study of the interaction of a laser-generated cavity with a nearby solid boundary , 1999 .

[10]  M. Autric,et al.  On laser induced single bubble near a solid boundary: Contribution to the understanding of erosion phenomena , 1998 .

[11]  W. Lauterborn,et al.  Cavitation erosion by single laser-produced bubbles , 1998, Journal of Fluid Mechanics.

[12]  Sheryl M. Gracewski,et al.  The behaviour of a gas cavity impacted by a weak or strong shock wave , 1996, Journal of Fluid Mechanics.

[13]  J. Field,et al.  A high‐speed photographic study of cavitation damage , 1995 .

[14]  Sheguang Zhang,et al.  On the nonspherical collapse and rebound of a cavitation bubble , 1994 .

[15]  T. Leighton.  The Acoustic Bubble , 1994 .

[16]  J. Staudenraus,et al.  Fibre-optic probe hydrophone for ultrasonic and shock-wave measurements in water , 1993 .

[17]  J. Best.  The formation of toroidal bubbles upon the collapse of transient cavities , 1993, Journal of Fluid Mechanics.

[18]  A. Vogel,et al.  Interaction of lithotripter‐generated shock waves with air bubbles , 1993 .

[19]  J. Seifert,et al.  The mechanisms of stone disintegration by shock waves. , 1991, Ultrasound in medicine & biology.

[20]  Ulrich Parlitz,et al.  Bifurcation structure of bubble oscillators , 1990 .

[21]  Werner Lauterborn,et al.  Optical and acoustic investigations of the dynamics of laser-produced cavitation bubbles near a solid boundary , 1989, Journal of Fluid Mechanics.

[22]  L A Crum,et al.  Acoustic cavitation generated by an extracorporeal shockwave lithotripter. , 1987, Ultrasound in medicine & biology.

[23]  J. Blake,et al.  Transient cavities near boundaries. Part 1. Rigid boundary , 1986, Journal of Fluid Mechanics.

[24]  Y. Tomita,et al.  Collapse of multiple gas bubbles by a shock wave and induced impulsive pressure , 1984 .

[25]  G. Chahine.  Experimental and asymptotic study of nonspherical bubble collapse , 1982 .

[26]  Michael J. Miksis,et al.  Bubble Oscillations of Large Amplitude , 1980 .

[27]  W. Lauterborn,et al.  Experimental investigations of cavitation-bubble collapse in the neighbourhood of a solid boundary , 1975, Journal of Fluid Mechanics.

[28]  W. Lauterborn,et al.  High‐speed holography of laser‐induced breakdown in liquids , 1972 .