Nonlinear Sciences – Pattern Formation and Solitons
Scientific paper
2001-11-13
Phys. Rev. E 65, 041607 (2002)
Nonlinear Sciences
Pattern Formation and Solitons
11 pages, 15 figures, REVTEX 4; reference added
Scientific paper
10.1103/PhysRevE.65.041607
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. 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.
Claret Josep
Kassner Klaus
Rehberg Ingo
Sagues Francesc
Schröter Matthias
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