Squeezing alcohol into sonoluminescing bubbles: The universal role of surfactants

R. Tögel, Sascha Hilgenfeldt, Detlef Lohse

Research output: Contribution to journalArticleAcademicpeer-review

34 Citations (Scopus)
31 Downloads (Pure)

Abstract

We conduct an experimental study of the dependence of single bubble sonoluminescence intensity on the concentration of various alcohols. The light intensity is reduced by one-half at a molar fraction of ethanol of 2.5 3 1025; butanol achieves the same reduction at a concentration 10 times smaller. We account for the results by a theoretical model in which the alcohols are assumed to be mechanically forced into the bubble at collapse, modifying the adiabatic exponent of the gas. The increasing hydrophobicities of the alcohols lead to decreasing effective adiabatic exponents, and thus to less heating and therefore less light. Support for this model is obtained by replotting the experimental light intensity values vs the calculated exponents, yielding a collapse of all data onto a universal curve.
Original languageUndefined
Pages (from-to)2509-2512
Number of pages4
JournalPhysical review letters
Volume84
Issue number11
DOIs
Publication statusPublished - 2000

Keywords

  • METIS-129586
  • IR-24785

Cite this

Tögel, R. ; Hilgenfeldt, Sascha ; Lohse, Detlef. / Squeezing alcohol into sonoluminescing bubbles: The universal role of surfactants. In: Physical review letters. 2000 ; Vol. 84, No. 11. pp. 2509-2512.
@article{b65e6640b5e84dc7a32777ad555dc7fb,
title = "Squeezing alcohol into sonoluminescing bubbles: The universal role of surfactants",
abstract = "We conduct an experimental study of the dependence of single bubble sonoluminescence intensity on the concentration of various alcohols. The light intensity is reduced by one-half at a molar fraction of ethanol of 2.5 3 1025; butanol achieves the same reduction at a concentration 10 times smaller. We account for the results by a theoretical model in which the alcohols are assumed to be mechanically forced into the bubble at collapse, modifying the adiabatic exponent of the gas. The increasing hydrophobicities of the alcohols lead to decreasing effective adiabatic exponents, and thus to less heating and therefore less light. Support for this model is obtained by replotting the experimental light intensity values vs the calculated exponents, yielding a collapse of all data onto a universal curve.",
keywords = "METIS-129586, IR-24785",
author = "R. T{\"o}gel and Sascha Hilgenfeldt and Detlef Lohse",
year = "2000",
doi = "10.1103/PhysRevLett.84.2509",
language = "Undefined",
volume = "84",
pages = "2509--2512",
journal = "Physical review letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "11",

}

Squeezing alcohol into sonoluminescing bubbles: The universal role of surfactants. / Tögel, R.; Hilgenfeldt, Sascha; Lohse, Detlef.

In: Physical review letters, Vol. 84, No. 11, 2000, p. 2509-2512.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Squeezing alcohol into sonoluminescing bubbles: The universal role of surfactants

AU - Tögel, R.

AU - Hilgenfeldt, Sascha

AU - Lohse, Detlef

PY - 2000

Y1 - 2000

N2 - We conduct an experimental study of the dependence of single bubble sonoluminescence intensity on the concentration of various alcohols. The light intensity is reduced by one-half at a molar fraction of ethanol of 2.5 3 1025; butanol achieves the same reduction at a concentration 10 times smaller. We account for the results by a theoretical model in which the alcohols are assumed to be mechanically forced into the bubble at collapse, modifying the adiabatic exponent of the gas. The increasing hydrophobicities of the alcohols lead to decreasing effective adiabatic exponents, and thus to less heating and therefore less light. Support for this model is obtained by replotting the experimental light intensity values vs the calculated exponents, yielding a collapse of all data onto a universal curve.

AB - We conduct an experimental study of the dependence of single bubble sonoluminescence intensity on the concentration of various alcohols. The light intensity is reduced by one-half at a molar fraction of ethanol of 2.5 3 1025; butanol achieves the same reduction at a concentration 10 times smaller. We account for the results by a theoretical model in which the alcohols are assumed to be mechanically forced into the bubble at collapse, modifying the adiabatic exponent of the gas. The increasing hydrophobicities of the alcohols lead to decreasing effective adiabatic exponents, and thus to less heating and therefore less light. Support for this model is obtained by replotting the experimental light intensity values vs the calculated exponents, yielding a collapse of all data onto a universal curve.

KW - METIS-129586

KW - IR-24785

U2 - 10.1103/PhysRevLett.84.2509

DO - 10.1103/PhysRevLett.84.2509

M3 - Article

VL - 84

SP - 2509

EP - 2512

JO - Physical review letters

JF - Physical review letters

SN - 0031-9007

IS - 11

ER -