Effects of alcohol addition on decay of sonoluminescence intensity

Shiba, Kota; Takemura, Yu; Mizukoshi, Yoshiteru; Yamamoto, Ken

doi:10.1250/ast.40.49

Cited by 3 publications

(4 citation statements)

References 4 publications

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“…Immediately after the start of irradiation, the SL intensity was weakened in the presence of alcohols. 20) The effect was emphasized when the alcohol with longer alkyl chain was added. This is considered to be related to the hydrophobicity of the added alcohols.…”

Section: Resultsmentioning

confidence: 99%

“…[12][13][14][15][16][17] This is caused by the evaporation of solutes into the bubbles and the possible subsequent reaction with excited-state intermediates, and by lowering the effective temperature at the bubble core. [18][19] The authors also reported MBSL from aqueous solutions containing various alcohols, 20) suggesting that the temporal changes in the emission intensity with the progress of the sonication is caused by the gas generated by the sonochemical decomposition of alcohol.…”

Section: Introductionmentioning

confidence: 99%

“…Fig.Relative sonoluminescence intensity at 310 nm at the beginning (0-2 min) and the end (28-30 min) of the sonication 20). …”

mentioning

confidence: 99%

See 2 more Smart Citations

Effects of primary C1–C6 linear alcohol addition and sonochemically decomposed products on multi-bubble sonoluminescence

Shiba

Takemura

Mizukoshi

et al. 2019

Jpn. J. Appl. Phys.

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Multi-bubble sonoluminescence (MBSL) was measured in Ar-saturated water containing 2 mmol dm −3 of a series of alcohols under sonication at a frequency of 410 kHz. The sonoluminescence intensity was weakened in the presence of the alcohols. The effect was emphasized further when an alcohol with a longer alkyl chain was added. The spectral and temporal changes are presumed to be attributable to gaseous products generated by sonochemical decomposition of alcohols. Gas generation, originating from alcohol decomposition, was observed even in the short 2 min sonication. When compared with the case of ethanol addition, larger amounts of gaseous products were generated when long chain 1-hexanol was added. The increase in gaseous product yield indicates that the alcohol decomposition proceeds with the progress of the sonication. The present study evaluated the dependency of MBSL on the hydrophobicity of added alcohol and characteristics of the decomposed gas products, such as solubility to water and specific heat ratio.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effects of primary C1–C6 linear alcohol addition and sonochemically decomposed products on multi-bubble sonoluminescence

Shiba

Takemura

Mizukoshi

et al. 2019

Jpn. J. Appl. Phys.

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show abstract

“…The contraction rate is high owing to the Rayleigh contraction, and during collapse, the inside of the bubble is subjected to high temperatures and pressures [9] , [10] , [11] . Light, known as sonoluminescence (SL), is emitted during cavitation and may provide information about bubble activity [12] , [13] , [14] , [15] , [16] , [17] . The huge number of cavitation bubbles that are generated move in a complex manner, repeatedly splitting and coalescing, owing to the ultrasonic radiation pressure, the flow of the liquid, the force exerted by the pressure gradient of the sound field, and the forces of attraction and repulsion acting between the bubbles.…”

Section: Introductionmentioning

confidence: 99%