Surface roughness-induced speed increase for active Janus micromotors

Udit Choudhury, Lluís Soler, John G. Gibbs, Samuel Sanchez, Peer Fischer

Research output: Contribution to journalArticlepeer-review

65 Scopus citations


We demonstrate a simple physical fabrication method to control surface roughness of Janus micromotors and fabricate self-propelled active Janus microparticles with rough catalytic platinum surfaces that show a four-fold increase in their propulsion speed compared to conventional Janus particles coated with a smooth Pt layer.

Original languageEnglish (US)
Pages (from-to)8660-8663
Number of pages4
JournalChemical Communications
Issue number41
StatePublished - May 21 2015

ASJC Scopus subject areas

  • Catalysis
  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • General Chemistry
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Materials Chemistry


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