Nanoprobes for diffusion measurements: Nanometric-sized electrodes (r=80 nm) have been constructed to map concentration profiles within the diffusion layer of a larger microelectrode (r=40 μm) at high resolution (see picture). Comparisons with theoretical predictions demonstrate that, contrary to common wisdom, natural convection in the solution does, to some extent, affect diffusion at microelectrodes.
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Baltes et al. (2004) studied this question.
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