title: Surface roughness-induced speed increase for active Janus micromotors.
abstract: 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.
authors.affiliation: Max-Planck Institute for Intelligent Systems, Heisenbergstr. 3, 70569 Stuttgart, Germany. sanchez@is.mpg.de.
authors.forename: Udit
authors.initials: U
authors.lastname: Choudhury
authors.forename: Lluís
authors.initials: L
authors.lastname: Soler
authors.forename: John G
authors.initials: JG
authors.lastname: Gibbs
authors.forename: Samuel
authors.initials: S
authors.lastname: Sanchez
authors.forename: Peer
authors.initials: P
authors.lastname: Fischer