Electrodeposition in support: concentration gradients, an ohmic model and the genesis of branching fractals

摘要: The technique of paper-supported copper electrodeposition provides examples well-presented fractal and dense radial structures. growths may be developed to reveal concentration gradients around the at low cell overpotential. Measurements for current length scale against time, within a mid-range overpotentials, fit an ohmic model growth conditions. To examine relation morphology micrometre-scale structure, we grew first one overpotential then continued lower Electron microscope observations this distinct change in microstructure from irregular dentritic microcrystalline high potential respectively. interface between is distinctive compact granular deposit. deposit unstable branching dendrite growth.