Observation of spontaneous combustion of hydrogen and oxygen in microbubbles

A.V. Postnikov, I.V. Uvarov, A.V. Prokaznikov, Vitaly Svetovoy

Research output: Contribution to journalArticleAcademicpeer-review

9 Citations (Scopus)

Abstract

Experimental evidence is presented that combustion can ignite at room temperature spontaneously inside microbubbles filled with mixture of hydrogen and oxygen. We perform water electrolysis in a closed microchamber by voltage pulses of alternating polarity at repetition frequencies 100 kHz to pump the gases rapidly into the electrolyte and produce extreme supersaturation with both gases. After a delay of 300 600 ls, we observe stroboscopically microbubbles of 5 20 lm in diameter that appear in between the electrodes for several microseconds. Each event is accompanied by a pressure jump of 0:1 1 bar that is measured interferometrically. The pressure jumps are attributed to combustion of the gases in the microbubbles.
Original languageEnglish
Article number121604
Pages (from-to)121604-
Number of pages4
JournalApplied physics letters
Volume108
Issue number12
DOIs
Publication statusPublished - 2016

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spontaneous combustion
oxygen
hydrogen
gases
electrolysis
supersaturation
repetition
polarity
electrolytes
pumps
electrodes
electric potential
room temperature
pulses
water

Keywords

  • IR-100772
  • METIS-317327

Cite this

Postnikov, A.V. ; Uvarov, I.V. ; Prokaznikov, A.V. ; Svetovoy, Vitaly. / Observation of spontaneous combustion of hydrogen and oxygen in microbubbles. In: Applied physics letters. 2016 ; Vol. 108, No. 12. pp. 121604-.
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Observation of spontaneous combustion of hydrogen and oxygen in microbubbles. / Postnikov, A.V.; Uvarov, I.V.; Prokaznikov, A.V.; Svetovoy, Vitaly.

In: Applied physics letters, Vol. 108, No. 12, 121604, 2016, p. 121604-.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Observation of spontaneous combustion of hydrogen and oxygen in microbubbles

AU - Postnikov, A.V.

AU - Uvarov, I.V.

AU - Prokaznikov, A.V.

AU - Svetovoy, Vitaly

PY - 2016

Y1 - 2016

N2 - Experimental evidence is presented that combustion can ignite at room temperature spontaneously inside microbubbles filled with mixture of hydrogen and oxygen. We perform water electrolysis in a closed microchamber by voltage pulses of alternating polarity at repetition frequencies 100 kHz to pump the gases rapidly into the electrolyte and produce extreme supersaturation with both gases. After a delay of 300 600 ls, we observe stroboscopically microbubbles of 5 20 lm in diameter that appear in between the electrodes for several microseconds. Each event is accompanied by a pressure jump of 0:1 1 bar that is measured interferometrically. The pressure jumps are attributed to combustion of the gases in the microbubbles.

AB - Experimental evidence is presented that combustion can ignite at room temperature spontaneously inside microbubbles filled with mixture of hydrogen and oxygen. We perform water electrolysis in a closed microchamber by voltage pulses of alternating polarity at repetition frequencies 100 kHz to pump the gases rapidly into the electrolyte and produce extreme supersaturation with both gases. After a delay of 300 600 ls, we observe stroboscopically microbubbles of 5 20 lm in diameter that appear in between the electrodes for several microseconds. Each event is accompanied by a pressure jump of 0:1 1 bar that is measured interferometrically. The pressure jumps are attributed to combustion of the gases in the microbubbles.

KW - IR-100772

KW - METIS-317327

U2 - 10.1063/1.4944780

DO - 10.1063/1.4944780

M3 - Article

VL - 108

SP - 121604-

JO - Applied physics letters

JF - Applied physics letters

SN - 0003-6951

IS - 12

M1 - 121604

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