Development of rolling magnetic Microrobots

Guan Lin Jiang, Yunn Horng Guu, Chiang Ni Lu, Pei Kao Li, Hui Mei Shen, Lung Sheng Lee, Jerliang Andrew Yeh, Max Ti Kuang Hou

Research output: Contribution to journalArticlepeer-review

50 Citations (Scopus)


This paper reports magnetic microrobots with rolling capability. A magnetic object subjected to an externally rotating magnetic field would be rotated due to the tendency of alignment between its internal magnetization and the field. Based on this principle, a magnetic microrobot in a spherical body with a diameter of several hundred microns was designed and fabricated. To remotely power and control the microrobot, a rotating magnet was used to generate a rotating magnetic field. Driven by this field, the microrobot can freely roll on threedimensional surfaces. These surfaces can be in air, water or silicon oil. In a dry environment, a microrobot with a diameter of 440 μm achieved a maximum linear speed of 13.2 mm s?1.

Original languageEnglish
Article number085042
JournalJournal of Micromechanics and Microengineering
Issue number8
Publication statusPublished - 2010 Aug

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Mechanics of Materials
  • Mechanical Engineering
  • Electrical and Electronic Engineering


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