Photoactivated colloidal dockers for cargo transportation

Jérémie Palacci, Stefano Sacanna, Adrian Vatchinsky, Paul M. Chaikin, David J. Pine

Research output: Contribution to journalArticlepeer-review

Abstract

We introduce a self-propelled colloidal hematite docker that can be steered to a small particle cargo many times its size, dock, transport the cargo to a remote location, and then release it. The self-propulsion and docking are reversible and activated by visible light. The docker can be steered either by a weak uniform magnetic field or by nanoscale tracks in a textured substrate. The light-activated motion and docking originate from osmotic/phoretic particle transport in a concentration gradient of fuel, hydrogen peroxide, induced by the photocatalytic activity of the hematite. The docking mechanism is versatile and can be applied to various materials and shapes. The hematite dockers are simple single-component particles and are synthesized in bulk quantities. This system opens up new possibilities for designing complex micrometer-size factories as well as new biomimetic systems.

Original languageEnglish (US)
Pages (from-to)15978-15981
Number of pages4
JournalJournal of the American Chemical Society
Volume135
Issue number43
DOIs
StatePublished - Oct 30 2013

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry

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