Finally, we comment on the fact that higher concentrations hamper the local deposition within our available parameter window. Considering the discussion above, it is noteworthy to mention that at just slightly higher concentrations, 10 µM , the improved screening power of the electrolyte results in the Debye screening length being about three times shorter (λ D ˜50 nm). Double layer cross-talk and direct electrostatic interaction in less dilute electrolytes is therefore only possible at shorter oscillation amplitudes in which mass transport limitations are restricting growth at the same time.