Magnetically-driven self-moving microactuators

K. I. Arai, M. Yamaguchi, T. Honda, K. Shimasaki

Research output: Contribution to journalConference articlepeer-review


This paper describes new micro-magnetic actuators for self-moving (-walking, -flying, and -swimming) microrobots. Their actuation force is generated by the interaction between external magnetic fields and the magnetic materials used for actuators. Accordingly, they can move independently without power supply cables. The walking actuator, composed of magnetostrictive thin films and two inclined legs, is capable of a high velocity of 65 mm/s and a reversible motion with forward and backward. The flying actuator has a pair of hard magnetic film wings with two elastic hinges and a soft magnetic wire body for attitude control. It can successfully fly without any cable or guide. Two kinds of swimming actuators, composed of a small magnet with an elastic fin or a spiral wire, can swim in viscous silicone oil with low Reynolds numbers.

Original languageEnglish
Pages (from-to)562-567
Number of pages6
JournalProceedings of SPIE - The International Society for Optical Engineering
Publication statusPublished - 1996
EventSmart Materials, Structures, and MEMS - Bangalore, India
Duration: 1996 Dec 111996 Dec 14


Dive into the research topics of 'Magnetically-driven self-moving microactuators'. Together they form a unique fingerprint.

Cite this