Inside a collapsing bubble: sonoluminescence and the conditions during cavitation.

@article{Suslick2008InsideAC,
  title={Inside a collapsing bubble: sonoluminescence and the conditions during cavitation.},
  author={Kenneth S. Suslick and David J. Flannigan},
  journal={Annual review of physical chemistry},
  year={2008},
  volume={59},
  pages={
          659-83
        }
}
Acoustic cavitation, the growth and rapid collapse of bubbles in a liquid irradiated with ultrasound, is a unique source of energy for driving chemical reactions with sound, a process known as sonochemistry. Another consequence of acoustic cavitation is the emission of light [sonoluminescence (SL)]. Spectroscopic analyses of SL from single bubbles as well as a cloud of bubbles have revealed line and band emission, as well as an underlying continuum arising from a plasma. Application of… 

Figures from this paper

The Chemical History of a Bubble.

The studies discussed herein have revealed that extraordinary conditions are generated inside the collapsing bubbles in ordinary room-temperature liquids: observable temperatures exceeding 15 000 K, pressures of well over 1000 bar (more than the pressure at the bottom of the Mariana Trench), and heating and cooling rates in excess of 1000 K·s-1.

Inside a Collapsing Cavity: Sonoluminescence as a Spectroscopic Probe

SUMMARY Extreme temperatures and pressures are produced through acoustic cavitation: the formation, growth and collapse of bubbles in a liquid irradiated with high intensity ultrasound. Single

Temperature inhomogeneity during multibubble sonoluminescence.

By examining the MBSL from aqueous H3PO4 solutions, the observed ultrabright sonoluminescence, found strong molecular emissions from both OHC and POC radicals, and have succeeded in using both simultaneously as spectroscopic thermometers.

Sonochemiluminescence from a single cavitation bubble in water.

The dramatic effects of microbubble collapse in ultrasonic fields, that is, acoustic cavitation, are known and exploited throughout numerous industrial and research areas, providing rich insight into the enigmatic nature of cavitation.

Fundamentals of Acoustic Cavitation and Sonochemistry

Acoustic cavitation is the formation and collapse of bubbles in liquid irradiated by intense ultrasound. The speed of the bubble collapse sometimes reaches the sound velocity in the liquid.

Sonoluminescence and acoustic cavitation

Sonoluminescence (SL) is light emission under high-temperature and high-pressure conditions of a cavitating bubble under intense ultrasound in liquid. In this review, the fundamentals of the

Mechanoluminescence Induced by Acoustic Cavitation

When a liq. is irradiated with high intensity ultrasound, micron-sized bubbles can be driven into violent collapse with a subsequent shockwave formed in the liq. from the bubble rebound. Small
...

References

SHOWING 1-10 OF 108 REFERENCES

Sonoluminescence temperatures during multi-bubble cavitation

Acoustic cavitation—the formation and implosive collapse of bubbles—occurs when a liquid is exposed to intense sound. Cavitation can produce white noise, sonochemical reactions, erosion of hard

Sonoluminescence and bubble dynamics for a single, stable, cavitation bubble

High‐amplitude radial pulsations of a single gas bubble in several glycerine and water mixtures have been observed in an acoustic stationary wave system at acoustic pressure amplitudes on the order

The Temperature of Cavitation

Sonoluminescence spectra from silicone oil showed emission came from excited state C2 (Swan band transitions, d3IIg—a3II�), which has been modeled with synthetic spectra as a function of rotational and vibrational temperatures.

The sonochemical hot spot

The origin of “sonochemistry” is acoustic cavitation: the formation, expansion, and implosive collapse of bubbles in liquids irradiated with ultrasound. The compression of such bubbles generates

Stable sonoluminescence within a water hammer tube.

Repetitive emission was produced from bubbles in condensed phosphoric acid, over four orders of magnitude greater than the brightest SL reported previously, corresponding to a 1% efficiency of the conversion of mechanical energy into light.

Plasma formation and temperature measurement during single-bubble cavitation

Observations of atomic (Ar) emission and extensive molecular (SO) and ionic (O2 +) progressions in SBSL spectra from concentrated aqueous H2SO4 solutions conclude that these emitting species must originate from collisions with high-energy electrons, ions or particles from a hot plasma core.

Single-bubble sonoluminescence

Experimental and theoretical efforts to understand single-bubble sonoluminescence, which occurs when an acoustically trapped and periodically driven gas bubble collapses so strongly that the energy focusing at collapse leads to light emission, are reviewed.

Cavitation thermometry using molecular and continuum sonoluminescence

The use of molecular and continuum emission spectra from multiple bubble (MB) and single bubble (SB) sonoluminescence (SL) is explored as a probe of bubble temperature during cavitational collapse.

A simple explanation of light emission in sonoluminescence

Ultrasonically driven gas bubbles in liquids can emit intense bursts of light when they collapse. The physical mechanism for single-bubble sonoluminescence has been much debated,. The conditions

Thermal equilibration during cavitation.

Flint and Suslick (1) reported the observation of C2(d3Hg a3E11) Swan emission from the ultrasonic cavitation of silicone oil and other hydrocarbons. The observed emission spectrum was accurately
...