title: Catalytic micromotor generating self-propelled regular motion through random fluctuation.
abstract: Most of the current studies on nano∕microscale motors to generate regular motion have adapted the strategy to fabricate a composite with different materials. In this paper, we report that a simple object solely made of platinum generates regular motion driven by a catalytic chemical reaction with hydrogen peroxide. Depending on the morphological symmetry of the catalytic particles, a rich variety of random and regular motions are observed. The experimental trend is well reproduced by a simple theoretical model by taking into account of the anisotropic viscous effect on the self-propelled active Brownian fluctuation.
authors.affiliation: Department of Chemical Engineering and Materials Science, Doshisha University, Kyoto 610-0321, Japan. dyamamot@mail.doshisha.ac.jp
authors.forename: Daigo
authors.initials: D
authors.lastname: Yamamoto
authors.forename: Atsushi
authors.initials: A
authors.lastname: Mukai
authors.forename: Naoaki
authors.initials: N
authors.lastname: Okita
authors.forename: Kenichi
authors.initials: K
authors.lastname: Yoshikawa
authors.forename: Akihisa
authors.initials: A
authors.lastname: Shioi
mesh_terms: D002384:Catalysis; D006861:Hydrogen Peroxide / Q000737:chemistry; D008958:Models, Molecular; D009038:Motion; D010984:Platinum / Q000737:chemistry*; D013269:Stochastic Processes
chemical_list: D010984:Platinum; D006861:Hydrogen Peroxide