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Magnetic Helical Micromachines: Fabrication, Controlled Swimming, and Cargo Transport
Author(s) -
Tottori Soichiro,
Zhang Li,
Qiu Famin,
Krawczyk Krzysztof K.,
FrancoObregón Alfredo,
Nelson Bradley J.
Publication year - 2012
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201103818
Subject(s) - fabrication , materials science , nanotechnology , anisotropy , magnetic field , evaporation , optoelectronics , optics , physics , medicine , alternative medicine , pathology , quantum mechanics , thermodynamics
A simple and general fabrication method for helical swimming micromachines by direct laser writing and e‐beam evaporation is demonstrated. The magnetic helical devices exhibit varying magnetic shape anisotropy, yet always generate corkscrew motion using a rotating magnetic field. They also exhibit good swimming performance and are capable of pick‐and‐place micromanipulation in 3D. Cytotoxicity of the devices was investigated using mouse myoblasts.