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Conference Papers Year : 2016

Acoustic bubbles microstreaming-induced fragmentation of ramified iron electrodeposits in a microchannel

Abstract

We report on the use of a high aspect ratio microchannel (Hele-Shaw’s cell) in which ramified iron deposits are electrochemically formed and next subjected to acoustic vibrations in order to fragment them into fine particles. Both the electrodes and a piezoelectric element are integrated in the microchannel. High speed visualization allows to highlight the key role of the co-produced H2 bubbles (during the electrodeposition step) which generate microstreaming when subjected to vibrations. The resulting flow pattern sets in motion the ramified iron branches and bring them to bubbles surfaces where they are fragmented into submicrometric particles of iron.
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Dates and versions

hal-03659498 , version 1 (05-05-2022)

Identifiers

  • HAL Id : hal-03659498 , version 1
  • OATAO : 17431

Cite

Audrey Iranzo, Théodore Tzedakis, Fabien Chauvet. Acoustic bubbles microstreaming-induced fragmentation of ramified iron electrodeposits in a microchannel. µTAS 2016 - The 20th International Conference on Miniaturized Systems for Chemistry and Life Sciences, Oct 2016, Dublin, Ireland. pp.1-2. ⟨hal-03659498⟩
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