title: Dynamics of biocatalytic microengines mediated by variable friction control.
abstract: We describe the motion of self-propelled hybrid microengines containing catalase enzyme covalently bound to the cavity of rolled-up microtubes. The high efficiency of these hybrid microengines allows them to move at a very low concentration of peroxide fuel. The dynamics of the catalytic engines is mediated by the generation of front-side bubbles, which increase the drag force and make them turn. The specific modification of the inner layer of microtubes with biomolecules can lead to other configurations to generate motion from different chemical fuels.
authors.affiliation: WPI-MANA, National Institute for Materials Science, Tsukuba, Ibaraki, 305-0044, Japan. s.sanchez@ifw-dresden.de
authors.forename: Samuel
authors.initials: S
authors.lastname: Sanchez
authors.forename: Alexander A
authors.initials: AA
authors.lastname: Solovev
authors.forename: Yongfeng
authors.initials: Y
authors.lastname: Mei
authors.forename: Oliver G
authors.initials: OG
authors.lastname: Schmidt
mesh_terms: D055162:Biocatalysis; D004798:Enzymes / Q000378:metabolism*
chemical_list: D004798:Enzymes