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Cooperative chemotaxis of magnesium microswimmers for corrosion spotting

Abstract : Numerous artificial micro-and nanomotors, as well as various swimmers have been inspired by living organisms that are able to move in a coordinated manner. Their cooperation has also gained a lot of attention because the resulting clusters are able to adapt to changes in their environment and to perform complex tasks. However, mimicking such a collective behavior remains a challenge. In the present work, magnesium microparticles are used as chemotactic swimmers with pronounced collective features, allowing the gradual formation of macroscopic agglomerates. The formed clusters act like a single swimmer able to follow pH gradients. This dynamic behavior can be used to spot in a straightforward way localized corrosion events. The autonomous docking of the swimmers to the corrosion site leads to the formation of a local protection layer, thus increasing corrosion resistance and triggering partial self-healing.
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https://hal-cnrs.archives-ouvertes.fr/hal-03516297
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Submitted on : Friday, January 7, 2022 - 10:23:57 AM
Last modification on : Friday, April 1, 2022 - 3:57:04 AM

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Ileana-Alexandra Pavel, Gerardo Salinas, Maciej Mierzwa, Serena Arnaboldi, Patrick A Garrigue, et al.. Cooperative chemotaxis of magnesium microswimmers for corrosion spotting. ChemPhysChem, Wiley-VCH Verlag, 2021, 22 (13), pp.1321-1325. ⟨10.1002/cphc.202100236⟩. ⟨hal-03516297⟩

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