| Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2017: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2016: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2015: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
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| Outline of Final Research Achievements |
In general, many organisms spontaneously migrate by self-propelling motions through the repeated deformation of their body. Although such self-propelling motion is ubiquitous for both living and non-living objects, it is still unclear whether universal relations between shape and movement exist. To explore universal laws of self-propelled objects, I investigated bifurcations of motion of a swimming droplet in viscous fluid. Through the 3D measurement of shape of the droplet, I showed that spontaneous symmetry breaking of the standing wave on the droplet induces the bifurcation of the droplet motion. We demonstrated that not only migration modes of swimming droplet but also cell migration dynamics can be well described by the model equations of deformable self-propelled particle. This result suggests the possibility to treat the self-propelled motions of both living and non-living objects in the same theoretical framework.
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