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Title: Experimental investigation of the initial regime in fingering electrodeposition: Dispersion relation and velocity measurements.
Author: Schröter, Matthias
Kassner, K.
Rehberg, I.
Claret Bonet, Josep
Sagués i Mestre, Francesc
Keywords: Ciència dels materials
Materials science
Applied physics
Issue Date: 2002
Publisher: The American Physical Society
Abstract: Recently a fingering morphology, resembling the hydrodynamic Saffman-Taylor instability, was identified in the quasi-two-dimensional electrodeposition of copper. We present here measurements of the dispersion relation of the growing front. The instability is accompanied by gravity-driven convection rolls at the electrodes, which are examined using particle image velocimetry. While at the anode the theory presented by Chazalviel et al. [J. Electroanal. Chem. 407, 61 (1996)] describes the convection roll, the flow field at the cathode is more complicated because of the growing deposit. In particular, the analysis of the orientation of the velocity vectors reveals some lag of the development of the convection roll compared to the finger envelope.
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It is part of: Physical Review E, 2002, vol. 65, núm. 4, p. 041607-1-041607-10
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ISSN: 1063-651X
Appears in Collections:Articles publicats en revistes (Ciència dels Materials i Química Física)

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