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Melt Electrospinning Writing of Magnetic Microrobots

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  • Yingchun Su, Harbin Institute of Technology
  • ,
  • Tian Qiu, Max Planck Institute for Intelligent Systems, University of Stuttgart
  • ,
  • Wen Song, The Fourth Military Medical University
  • ,
  • Xiaojun Han, Harbin Institute of Technology
  • ,
  • Mengmeng Sun, Harbin Institute of Technology
  • ,
  • Zhao Wang, Harbin Institute of Technology
  • ,
  • Hui Xie, Harbin Institute of Technology
  • ,
  • MD Dong
  • Menglin Chen

The magnetic microrobots actuated by an external magnetic field can access distant, enclosed, and small spaces under fuel-free conditions, which is apromising technology for manipulation and delivery under microenvironment; however, the complicated fabrication method limits their applications. Herein, three techniques including melt electrospinning writing (MEW), micromolding, and skiving process are combined to successfully mass-produce tadpole-like magnetic polycaprolactone/Fe 3O 4 (PCL/Fe 3O 4) microrobot. Importantly, the tadpole-like microrobots under an external magnetic field can achieve two locomotions: rolling mode and propulsion mode. The rolling motion can approach the working destination quickly with a speed of ≈2 mm s −1. The propulsion motion (0−340 µm s −1) can handle a microcargo. Such a simple and cost-effective production method shows a great potential for scale-up fabrication of advanced shape-design, mass-production, and multifunctionality microrobot.

Original languageEnglish
Article number2003177
JournalAdvanced Science
Number of pages7
Publication statusPublished - Feb 2021

    Research areas

  • melt electrospinning writing, micromolding, microrobot, skiving, wireless actuation

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