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How to steer active colloids up a vertical wall

Author

Listed:
  • Adérito Fins Carreira

    (Université de Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière Matière)

  • Adam Wysocki

    (Saarland University)

  • Christophe Ybert

    (Université de Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière Matière)

  • Mathieu Leocmach

    (Université de Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière Matière)

  • Heiko Rieger

    (Saarland University
    Leibniz Institute for New Materials INM)

  • Cécile Cottin-Bizonne

    (Université de Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière Matière)

Abstract

An important challenge in active matter lies in harnessing useful global work from entities that produce work locally, e.g., via self-propulsion. We investigate here the active matter version of a classical capillary rise effect, by considering a non-phase separated sediment of self-propelled Janus colloids in contact with a vertical wall. We provide experimental evidence of an unexpected and dynamic adsorption layer at the wall. Additionally, we develop a complementary numerical model that recapitulates the experimental observations. We show that an adhesive and aligning wall enhances the pre-existing polarity heterogeneity within the bulk, enabling polar active particles to climb up a wall against gravity, effectively powering a global flux. Such steady-state flux has no equivalent in a passive wetting layer.

Suggested Citation

  • Adérito Fins Carreira & Adam Wysocki & Christophe Ybert & Mathieu Leocmach & Heiko Rieger & Cécile Cottin-Bizonne, 2024. "How to steer active colloids up a vertical wall," Nature Communications, Nature, vol. 15(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-45872-1
    DOI: 10.1038/s41467-024-45872-1
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    References listed on IDEAS

    as
    1. Sambeeta Das & Astha Garg & Andrew I. Campbell & Jonathan Howse & Ayusman Sen & Darrell Velegol & Ramin Golestanian & Stephen J. Ebbens, 2015. "Boundaries can steer active Janus spheres," Nature Communications, Nature, vol. 6(1), pages 1-10, December.
    2. F. Ginot & I. Theurkauff & F. Detcheverry & C. Ybert & C. Cottin-Bizonne, 2018. "Aggregation-fragmentation and individual dynamics of active clusters," Nature Communications, Nature, vol. 9(1), pages 1-9, December.
    3. Juliane Simmchen & Jaideep Katuri & William E. Uspal & Mihail N. Popescu & Mykola Tasinkevych & Samuel Sánchez, 2016. "Topographical pathways guide chemical microswimmers," Nature Communications, Nature, vol. 7(1), pages 1-9, April.
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