title: A tale of two forces: simultaneous chemical and acoustic propulsion of bimetallic micromotors.
abstract: Bimetallic gold-ruthenium microrods are propelled in opposite directions in water by ultrasound and by catalytic decomposition of hydrogen peroxide. This property was used to effect reversible swarming, to stall and reverse autonomous axial propulsion, and to study the chemically powered movement of acoustically levitated microrods.
authors.affiliation: School of Material Science and Engineering, Harbin Institute of Technology, Shenzhen Graduate School, Shenzhen, 518055, China.
authors.forename: Wei
authors.initials: W
authors.lastname: Wang
authors.forename: Wentao
authors.initials: W
authors.lastname: Duan
authors.forename: Zexin
authors.initials: Z
authors.lastname: Zhang
authors.forename: Mei
authors.initials: M
authors.lastname: Sun
authors.forename: Ayusman
authors.initials: A
authors.lastname: Sen
authors.forename: Thomas E
authors.initials: TE
authors.lastname: Mallouk
mesh_terms: D000162:Acoustics; D002384:Catalysis; D006046:Gold / Q000737:chemistry*; D006861:Hydrogen Peroxide / Q000737:chemistry; D009038:Motion; D012428:Ruthenium / Q000737:chemistry*; D014867:Water / Q000737:chemistry
chemical_list: D014867:Water; D006046:Gold; D012428:Ruthenium; D006861:Hydrogen Peroxide