%0 Journal Article %T Cooperative chemotaxis of magnesium microswimmers for corrosion spotting %+ Institut des Sciences Moléculaires (ISM) %+ Institut Polytechnique de Bordeaux (Bordeaux INP) %A Pavel, Ileana-Alexandra %A Salinas, Gerardo %A Mierzwa, Maciej %A Arnaboldi, Serena %A Garrigue, Patrick, A %A Kuhn, Alexander %Z ERC Electra %< avec comité de lecture %@ 1439-4235 %J ChemPhysChem %I Wiley-VCH Verlag %V 22 %N 13 %P 1321-1325 %8 2021-07-02 %D 2021 %R 10.1002/cphc.202100236 %Z Chemical SciencesJournal articles %X 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. %G English %2 https://cnrs.hal.science/hal-03516297/document %2 https://cnrs.hal.science/hal-03516297/file/Open%20draft.pdf %L hal-03516297 %U https://cnrs.hal.science/hal-03516297 %~ CNRS %~ UNIV-BORDEAUX %~ OPENAIRE %~ INC-CNRS %~ TEST2-HALCNRS