Two-dimensional metal deposition at the liquid vertical bar liquid interface; potential and magnetohydrodynamic pattern transition

A two-dimensional metal film localized at the interface between 4-methyl-2- pentanone and aqueous electrolyte solution, was formed by an electrochemica l deposition of zinc. The shape of this film changed as a function of the e lectrode potential. In the large overpotential region where the deposition was restricted by the transport of the zinc ion, a fractal pattern was form ed. However, a disk pattern was made under the potential region where the e lectron transfer was the rate-determining step. Under a magnetic field, a s piral distortion of the two-dimensional and quasi-two-dimensional fractal p attern was observed at an air\liquid interface and in a thin layer electrol yte solution, respectively. The pattern produced at the liquid\liquid inter face showed no distortion under the magnetic field. (C) 1999 Elsevier Scien ce S.A. Al rights reserved.