The use of acoustoelectrochemistry to investigate rectified diffusion
The use of acoustoelectrochemistry to investigate rectified diffusion
This paper describes the approach to bubble related phenomena using a novel ‘acoustoelectrochemical' technique designed to investigate the physical and chemical effects of the acoustically induced motion of the bubble wall. In particular it describes the behaviour of a suspended gas bubble irradiated with sound of an appropriate frequency and pressure to induce bubble wall oscillation.
The first electrochemical measurement of the growth of a bubble through rectified diffusion is demonstrated. The technique employed relies on the sensitivity of a scanning electrochemical microscope (SECM) deployed close to the gas/liquid interface of a bubble. The growth rate of the bubble (<0.1 ?m s?1) is reported. It will be also demonstrated that gas exchange across the phase boundary at the bubble wall, can be successfully probed when the bubble is stationary.
oscillation, rectified diffusion, microelectrodes, bubbles, acoustics
217-221
Birkin, P.R.
ba466560-f27c-418d-89fc-67ea4f81d0a7
Leighton, T.G.
3e5262ce-1d7d-42eb-b013-fcc5c286bbae
Watson, Y.E.
48a8ba6c-6bed-48c2-b173-2cf440991a98
2004
Birkin, P.R.
ba466560-f27c-418d-89fc-67ea4f81d0a7
Leighton, T.G.
3e5262ce-1d7d-42eb-b013-fcc5c286bbae
Watson, Y.E.
48a8ba6c-6bed-48c2-b173-2cf440991a98
Birkin, P.R., Leighton, T.G. and Watson, Y.E.
(2004)
The use of acoustoelectrochemistry to investigate rectified diffusion.
Ultrasonics Sonochemistry, 11 (3-4), .
(doi:10.1016/j.ultsonch.2004.01.023).
Abstract
This paper describes the approach to bubble related phenomena using a novel ‘acoustoelectrochemical' technique designed to investigate the physical and chemical effects of the acoustically induced motion of the bubble wall. In particular it describes the behaviour of a suspended gas bubble irradiated with sound of an appropriate frequency and pressure to induce bubble wall oscillation.
The first electrochemical measurement of the growth of a bubble through rectified diffusion is demonstrated. The technique employed relies on the sensitivity of a scanning electrochemical microscope (SECM) deployed close to the gas/liquid interface of a bubble. The growth rate of the bubble (<0.1 ?m s?1) is reported. It will be also demonstrated that gas exchange across the phase boundary at the bubble wall, can be successfully probed when the bubble is stationary.
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Published date: 2004
Additional Information:
4th Conference on the Applications of Power Ultrasound in Physical and Chemical Processing
Keywords:
oscillation, rectified diffusion, microelectrodes, bubbles, acoustics
Identifiers
Local EPrints ID: 27997
URI: http://eprints.soton.ac.uk/id/eprint/27997
ISSN: 1350-4177
PURE UUID: c0fce853-05c3-4573-af9d-aed02f742ac9
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Date deposited: 28 Apr 2006
Last modified: 16 Mar 2024 02:46
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Author:
Y.E. Watson
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