Self-Propelled Motion of the Camphor Float With n-Fold Rotational Symmetry

It is known that a camphor particle at water surface exhibits self-propulsion since it releases molecules the and reduces tension, gradient of tension drives itself. Such motion considered to be driven by concentration field chemicals emitted also shape seriously affects mode motion. In order understand universal mechanism on effect such self-propelled motion, we theoretically investigated bifurcation structure float with n -fold rotational symmetry, which comprises disks attached rigid light circular plate along periphery an equivalent spacing. Here, mainly studied cases = 2 3. We found moves in direction perpendicular line connecting two disks, while 3 changes its depending size float.