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We report experimental evidence indicating that two-dimensional zinc electrodeposition clusters in the limit of small ionic concentration and small voltage are self-similar with generalized dimensions D q = 1.66 ±0.08. Small-mass clusters obtained in a numerical simulation of diffusion-limited aggregation in a strip geometry are also found to be self-similar, with D q = 1.60 ±0.02. These results suggest that electrodeposition and diffusion-limited clusters have a similar geometrical structure.

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