Experimental study of laser-induced cavitation bubbles

Giovanneschi, P.; Dufresne, D.

doi:10.1063/1.336204

Cited by 28 publications

(11 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…laser-induced) cavitation has been studied using a variety of high-speed imaging techniques including Schlieren [1] and streak [2] photography and shadowgraphy [3] . With sufficiently high temporal resolution, all of these methods are capable of visualising acoustic transients formed as a result of cavitation .…”

Section: Introductionmentioning

confidence: 99%

The Energies and Pressures of Acoustic Transients Associated with Optical Cavitation in Water

Ward

Emmony

1990

Journal of Modern Optics

View full text Add to dashboard Cite

The acoustic transients associated with optical cavitation in water have been studied using a high-speed interferometric technique . Radial pressure profiles of these spherical transients have been obtained over a range between 2 and 22 mm from the centre of the cavity . Pressure-radius relationships and transient energies have subsequently been determined for the acoustic waves and the volumes of liquid enclosed within them . . IntroductionThe phenomenon of optical (i .e . laser-induced) cavitation has been studied using a variety of high-speed imaging techniques including Schlieren [1] and streak [2] photography and shadowgraphy [3] . With sufficiently high temporal resolution, all of these methods are capable of visualising acoustic transients formed as a result of cavitation . They do not, however, provide a quantitative measure of the pressures of these transients . They have also tended to rely on conventional photography which is particularly inconvenient in this field of study .In this work, Nd : YAG laser-induced cavitation bubbles and their acoustic transients have been observed in water using a Mach-Zehnder interferometer and a video imaging system . The interferometer was illuminated by a sub-nanosecond light pulse from a nitrogen-pumped dye laser . Interferograms of the cavitation events showed changes in pressure of the liquid as fringe displacements .Previous work in this area has involved the use of transducers and other mechanical methods in measurements of pressure of the acoustic waves . The noncontact high-resolution optical technique used here provides a sensitive measure of transient pressure in cavitation events . . A simple model of the acoustic waveDuring the early stages of cavitation bubble expansion, the walls of the cavity expand extremely rapidly-faster than the sound speed of the host liquid . The motion of the liquid in the immediate vicinity of the cavity is manifested as a spherical shock wave which travels outwards from the bubble . After a short distance (< 100 pm [4]) the wave slows down to the sound speed and continues as a normal acoustic transient .In this model, the transient was considered to be a step function of liquid pressure . The volume of liquid enclosed within this spherical step was taken to be at a constant pressure, not necessarily equal to the static pressure of the liquid outside . Assuming the width of the step remained a constant, this implied that the peak pressure of the transient was inversely proportional to its radius . Since the volume of 0950-0340/90 $3 . 00

show abstract

Section: Introductionmentioning

confidence: 99%

The Energies and Pressures of Acoustic Transients Associated with Optical Cavitation in Water

Ward

Emmony

1990

Journal of Modern Optics

View full text Add to dashboard Cite

show abstract

“…At very high illumination intensities ͑10 16 W/m 3 ͒, bubbles grow on both the tip and the glass sample plate, probably by optical cavitation. 10 By illumination with a lower intensity of light, we are able to produce photoluminescence ͑see Figs. 2 and 4͒ while avoiding bubble formation and thereby produce emission of orange light from the tip under conditions that are useful to AFM and related techniques.…”

Section: Resultsmentioning

confidence: 99%

An atomic force microscope tip as a light source

Lulevich

Honig

2005

Review of Scientific Instruments

View full text Add to dashboard Cite

We present a simple method for causing the end of a silicon nitride atomic force microscope (AFM) tip to emit light, and we use this emitted light to perform scanning near-field optical microscopy. Illumination of a silicon nitride AFM tip by blue (488nm) or green (532nm) laser light causes the sharp part of the tip to emit orange light. Orange light is emitted when the tip is immersed in either air or water; and while under illumination, emission continues for a period of many hours without photobleaching. By careful alignment of the incident beam, we can arrange the scattered light to decay as a function of the tip-substrate separation with a decay length of 100–200nm. The exponential decay of the intensity means that the emitted light is dominated by contributions from parts of the tip that are near the sample, and therefore the emitted orange light can be used to capture high-resolution near-field optical images in air or water.

show abstract

“…and because the spacing between the cavity and any boundary can critically affect the collapse [390]. Techniques for ensuring predictable events include the use of lasers, as illustrated earlier, to produce a bubble in liquid [232,391,392]. As discussed in section 5.1.2, electrical sparking can also be used to produced cavitation bubbles predictably, and this has been used in several jetting studies (see, for example, Chahine [393]).…”

Section: Pw-h = (57) Pcs + Pdcdmentioning

confidence: 99%

Effects and Mechanisms

Leighton

1994

The Acoustic Bubble

View full text Add to dashboard Cite

Experimental study of laser-induced cavitation bubbles

Cited by 28 publications

References 1 publication

The Energies and Pressures of Acoustic Transients Associated with Optical Cavitation in Water

The Energies and Pressures of Acoustic Transients Associated with Optical Cavitation in Water

An atomic force microscope tip as a light source

Effects and Mechanisms

Contact Info

Product

Resources

About