Ferrofluids for Fabrication of Remotely Controllable Micro‐Nanomachines by Two‐Photon Polymerization

Design and fabrication of remote-controllable micromachines by femtosecond laser-induced two-photon polymerization (TPP) of novel ferrofluids resin composed of methacrylate groups modified Fe3O4 nanoparticles and photoresists is demonstrated. As two typical models, a micro-spring and a micro-turbine were successfully fabricated for precise motion control. The development of remotely controllable micro-nanomachines would shorten the distance between actionless micro-nanostructures and smart microrobots. Detailed facts of importance to specialist readers are published as "Supporting Information". Such documents are peer-reviewed, but not copy-edited or typeset. They are made available as submitted by the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.