Nature of the “Extreme Conditions” in Single Sonoluminescing Bubbles

Lepoint-Mullie, Françoise; Pauw, Damien De; Lepoint, T.; Supiot, Philippe; Avni, Rudy

doi:10.1021/jp9615060

Cited by 20 publications

(9 citation statements)

References 22 publications

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“…An alternative explanation hinges on a plasma diagnostics analysis of experimental sonoluminescence spectra, which gives higher than expected values for cavitation temperatures. 41 Thus, sonoluminescence is shown to arise from chemiluminescent reactions of seed molecules (inner gas such as N 2 or solvents such as water) with their dissociation products. Theoretical calculations also predict that chemical reactions in an air bubble under SBSL conditions should produce appreciable amounts of H ?…”

Section: Temperatures Of Cavitationmentioning

confidence: 99%

Power ultrasound in organic synthesis: moving cavitational chemistry from academia to innovative and large-scale applications

2006

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Ultrasound, an efficient and virtually innocuous means of activation in synthetic chemistry, has been employed for decades with varied success. Not only can this high-energy input enhance mechanical effects in heterogeneous processes, but it is also known to induce new reactivities leading to the formation of unexpected chemical species. What makes sonochemistry unique is the remarkable phenomenon of cavitation, currently the subject of intense research which has already yielded thought-provoking results. This critical review is aimed at discussing the present status of cavitational chemistry and some of the underlying phenomena, and to highlight some recent applications and trends in organic sonochemistry, especially in combination with other sustainable technologies. (151 references.).

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Section: Temperatures Of Cavitationmentioning

confidence: 99%

Power ultrasound in organic synthesis: moving cavitational chemistry from academia to innovative and large-scale applications

2006

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“…Whilst these estimations may be approximate, experimental measurements suggest that these are not unreasonable and that even higher temperatures may be produced [69][70][71][72][73] in both multibubble and single-bubble cavitation [74,75]. This effect may bring extremely high level of mass transport, homogenization of the solvent, intermediate reactions [72,73,76]. (c) Shock waves: sudden collapse of cavitation bubbles leads to the formation of shock waves.…”

Section: Sonoelectrochemistrymentioning

confidence: 99%

Evolution of Principle and Practice of Electrodeposited Thin Film: A Review on Effect of Temperature and Sonication

Mallik

Ray

2011

International Journal of Electrochemistry

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This review discusses briefly the important aspects of thin films. The introduction of the article is a summary of evolution of thin films from surface engineering, their deposition methods, and important issues. The fundamental aspects of electrochemical deposition with special emphasis on the effect of temperature on the phase formation have been reviewed briefly. The field of sonoelectrochemistry has been discussed in the paper . The literature regarding the effects of temperature and sonication on the structure and morphology of the deposits and nucleation mechanisms, residual stress, and mechanical properties has also been covered briefly.

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“…Recent findings suggest temperatures ranging from 5000 to ≈20 000 K, or higher. [27][28][29][30][31] Nevertheless, this picture provides an intuitive rationale for understanding how sonochemical reactions occur (Scheme 3): volatile molecules penetrate the bubbles and Scheme 3 Topology of reactions in a bubble field.…”

Section: Theoretical Interpretations Of Cavitationmentioning

confidence: 99%

Green chemistry

Cintas¹,

Luche²

1999

Green Chem.

248

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Although the applications of ultrasound have long been known in both industry and academy, the "green" value of the non-hazardous acoustic radiation has been recognised by synthetic and environmental chemists only recently. The chemical and physical effects of ultrasound arise from the cavitational collapse which produce extreme conditions locally and thus induce the formation of chemical species not easily attained under conventional conditions, driving a particular radical reactivity. This rationale, accessible in a non-mathematical manner, anticipates the advantages of using this technology in a variety of processes that include milder reactions with improved yields and selectivities, easy generation of reactive species and catalysts or replacement of hazardous reagents. Sonication enables the rapid dispersion of solids, decomposition of organics including biological components, as well as the formation of porous materials and nanostructures. This review summarises how ultrasound can be harnessed to develop an alternative and mild chemistry, which parallels the ability of acoustic waves to induce homolytic bond cleavage.Examples of these advantages are described in this paper, and more complete literature coverage can be found in previous publications. [2][3][4] In the future, compatibility with other physical methods, e.g. microwaves plus ultrasound, or light plus ultrasound, 6 which is just starting to be explored, should enlarge considerably the range of applications.

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Nature of the “Extreme Conditions” in Single Sonoluminescing Bubbles

Cited by 20 publications

References 22 publications

Power ultrasound in organic synthesis: moving cavitational chemistry from academia to innovative and large-scale applications

Power ultrasound in organic synthesis: moving cavitational chemistry from academia to innovative and large-scale applications

Evolution of Principle and Practice of Electrodeposited Thin Film: A Review on Effect of Temperature and Sonication

Green chemistry

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