MP-51 バクテリア駆動マイクロモータの最適設計と駆動実証(ポスターセッション)

概要

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Two types of micromotors rotated by collision of gliding bacteria named Mycoplasma mobile (M. mobile) have been developed. These micromotors were fabricated by two-photon microstereolithography. The first simple designed motor has saw-toothed blades. The directions of M. mobiles are controlled by the guide wall around the rotor. We demonstrated that the rotor with an asymmetric shape was rotated by the random collision of multiple M. mobiles. To improve the shape of the asymmetric rotor, we examined the motility characteristics of M. mobiles with various kinds of walls. As a result, we found that M. mobile kept going at cusps. Therefore, we proposed a flower-shaped rotor that has cusps and stream-line shape which are determined by the motility characteristics of M. mobile. Owing to the unique property, the microrotor could be continuously rotated by the random collisions of M. mobiles. The bacteria-driven micromotor will be applied to self-powered microsystems.
2011-09-25