Real-time tracking of metal nucleation via local perturbation of hydration layers

Robert L. Harniman, Daniela Plana, George H. Carter, Kieren A. Bradley, Mervyn J. Miles and David J. Fermín ()
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Robert L. Harniman: University of Bristol
Daniela Plana: University of Bristol
George H. Carter: University of Bristol
Kieren A. Bradley: University of Bristol
Mervyn J. Miles: University of Bristol
David J. Fermín: University of Bristol

Nature Communications, 2017, vol. 8, issue 1, 1-8

Abstract: Abstract The real-time visualization of stochastic nucleation events at electrode surfaces is one of the most complex challenges in electrochemical phase formation. The early stages of metal deposition on foreign substrates are characterized by a highly dynamic process in which nanoparticles nucleate and dissolve prior to reaching a critical size for deposition and growth. Here, high-speed non-contact lateral molecular force microscopy employing vertically oriented probes is utilized to explore the evolution of hydration layers at electrode surfaces with the unprecedented spatiotemporal resolution, and extremely low probe-surface interaction forces required to avoid disruption or shielding the critical nucleus formation. To the best of our knowledge, stochastic nucleation events of nanoscale copper deposits are visualized in real time for the first time and a highly dynamic topographic environment prior to the formation of critical nuclei is unveiled, featuring formation/re-dissolution of nuclei, two-dimensional aggregation and nuclei growth.

Date: 2017
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Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:8:y:2017:i:1:d:10.1038_s41467-017-01087-1

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DOI: 10.1038/s41467-017-01087-1

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