Birkin, Peter R., Watson, Yvonne E., Leighton, Timothy G. and Smith, Karen L.
Electrochemical detection of faraday waves on the surface of a gas bubble
Langmuir, 18, (6), . (doi:10.1021/la0111001).
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The oscillation of a gas bubble driven by an acoustic field has been investigated using an electrochemical sensing technique. A low-resolution scanning electrochemical microscopy technique, employing an L-shaped microelectrode, has been employed to address the equator of a tethered bubble. Real-time mass transfer enhancements as the result of bubble wall motion have been detected using the electrochemical reduction of Fe(CN)(6)(3-). A comparison of the pressure threshold measurements of the onset of surface oscillations with a theoretical model is presented. Photographic evidence of the presence and shape distortions of the bubble surface is also demonstrated.
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