Schooling behavior of light-powered autonomous micromotors in water

Michael Ibele, Thomas E. Mallouk, Ayusman Sen

Research output: Contribution to journalArticlepeer-review

383 Scopus citations


A new school of thought: Micrometer-sized silver chloride (AgCl) particles (red) in deionized water move under UV illumination by self-diffusiophoresis (see picture). Each AgCl particle secretes ions to which the other particles respond, and they are observed to"school" into regions with higher concentrations of particles. Photo-inactive silica particles (blue) also respond to the chemical secretion by swimming towards and surrounding individual AgCl particles.

Original languageEnglish (US)
Pages (from-to)3308-3312
Number of pages5
JournalAngewandte Chemie - International Edition
Issue number18
StatePublished - Apr 20 2009

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Chemistry(all)


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