title: Catalytic Janus motors on microfluidic chip: deterministic motion for targeted cargo delivery.
abstract: We fabricated self-powered colloidal Janus motors combining catalytic and magnetic cap structures, and demonstrated their performance for manipulation (uploading, transportation, delivery) and sorting of microobjects on microfluidic chips. The specific magnetic properties of the Janus motors are provided by ultrathin multilayer films that are designed to align the magnetic moment along the main symmetry axis of the cap. This unique property allows a deterministic motion of the Janus particles at a large scale when guided in an external magnetic field. The observed directional control of the motion combined with extensive functionality of the colloidal Janus motors conceptually opens a straightforward route for targeted delivery of species, which are relevant in the field of chemistry, biology, and medicine.
authors.affiliation: Institute for Integrative Nanosciences, IFW Dresden, Helmholtzstrasse 20, D-01069 Dresden, Germany. larysa.baraban@nano.tu-dresden.de
authors.forename: Larysa
authors.initials: L
authors.lastname: Baraban
authors.forename: Denys
authors.initials: D
authors.lastname: Makarov
authors.forename: Robert
authors.initials: R
authors.lastname: Streubel
authors.forename: Ingolf
authors.initials: I
authors.lastname: Mönch
authors.forename: Daniel
authors.initials: D
authors.lastname: Grimm
authors.forename: Samuel
authors.initials: S
authors.lastname: Sanchez
authors.forename: Oliver G
authors.initials: OG
authors.lastname: Schmidt
mesh_terms: D002384:Catalysis; D006861:Hydrogen Peroxide / Q000737:chemistry; D060526:Magnetic Fields; D046210:Microfluidic Analytical Techniques / Q000379:methods*; D009038:Motion
chemical_list: D006861:Hydrogen Peroxide