A novel combination of an electrochemical quartz crystal microbalance and a scanning electrochemical microscope
A novel combination of an electrochemical quartz crystal microbalance and a scanning electrochemical microscope
A novel combination of an electrochemical quartz crystal microbalance and a scanning electrochemical microscope has been built. The EQCM allows rapid in-situ measurement of the modulus of the crystal's transfer function. Data analysis in the complex plane for the Butterworth-Van Dyke (BVD) equivalent circuit yields the real and the imaginary components R (dampening resistance) and XL (reactive inductance) of the crystal's electroacoustic impedance around its resonance frequency of 10 MHz. If a big change in R is observed during a redox reaction of a non-rigid film, it has been shown previously, that mass changes cannot be distinguished from viscoelastic changes. In this case additional information on ion fluxes across the film/solution interface can be provided by an SECM incorporated into the instrument. This capability is demonstrated with the potentiodynamic deposition and dissolution of a Cu film from a Cu(I) solution.
liquids, profile
1566772273
109-115
Bartlett, P.N.
d99446db-a59d-4f89-96eb-f64b5d8bb075
Denuault, G.
5c76e69f-e04e-4be5-83c5-e729887ffd4e
Gollas, A.
0308185f-f5c1-41cb-a428-03d207d1270e
September 1999
Bartlett, P.N.
d99446db-a59d-4f89-96eb-f64b5d8bb075
Denuault, G.
5c76e69f-e04e-4be5-83c5-e729887ffd4e
Gollas, A.
0308185f-f5c1-41cb-a428-03d207d1270e
Bartlett, P.N., Denuault, G. and Gollas, A.
(1999)
A novel combination of an electrochemical quartz crystal microbalance and a scanning electrochemical microscope.
Leddy, J., Vanysek, P. and Porter, M.D.
(eds.)
In New Direction in Electroanalytical Chemistry II.
Electrochemical Society.
.
Record type:
Conference or Workshop Item
(Paper)
Abstract
A novel combination of an electrochemical quartz crystal microbalance and a scanning electrochemical microscope has been built. The EQCM allows rapid in-situ measurement of the modulus of the crystal's transfer function. Data analysis in the complex plane for the Butterworth-Van Dyke (BVD) equivalent circuit yields the real and the imaginary components R (dampening resistance) and XL (reactive inductance) of the crystal's electroacoustic impedance around its resonance frequency of 10 MHz. If a big change in R is observed during a redox reaction of a non-rigid film, it has been shown previously, that mass changes cannot be distinguished from viscoelastic changes. In this case additional information on ion fluxes across the film/solution interface can be provided by an SECM incorporated into the instrument. This capability is demonstrated with the potentiodynamic deposition and dissolution of a Cu film from a Cu(I) solution.
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Published date: September 1999
Additional Information:
5
BN35V
Venue - Dates:
Symposium on New Directions in Electroanalytical Chemistry II, 1999-08-31
Keywords:
liquids, profile
Identifiers
Local EPrints ID: 179239
URI: http://eprints.soton.ac.uk/id/eprint/179239
ISBN: 1566772273
PURE UUID: 1e070d33-51d7-4713-a2a6-ab739604d630
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Date deposited: 07 Apr 2011 09:07
Last modified: 11 Dec 2021 02:56
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Contributors
Author:
A. Gollas
Editor:
J. Leddy
Editor:
P. Vanysek
Editor:
M.D. Porter
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