Abstract
Recentlt, self-motion is attracting attentions as a new motion mechanism that does not require energy supply from outside. Micro self-motion mechanism, in expected to be applied to transportations of small bodies in the water and environmental sensing devices. Among them, driving method using surface tension gradient on water surface are known. By using ionic liquids with ampliphilic chemical structure which can modify surface tention of water surface, the object can be driven by converting chemical energy into mechanical energy directly. We already, confirmed that small objects depositing an imidazolium-based ionic liquid [bmim][PF_6] (1-butyl-3-methylimidaz-olium hexafluorophosphate) moved spontaneously on water surface. In this study, by using a magnetic ionic liquid [bmim][FeCl_4](1-buthyl-3-methylimidazoium Tetrachloroferrate) containing a magnetic anion, we examined a potential application to control the direction of the self-motion by applying magnetic field.
