4 papers
Rotation-to-translation conversion by geometric asymmetry in viscoelastic fluids
Takuya Kobayashi, Hiroki Kitano, Ryoichi Yamamoto
Microscale locomotion in Newtonian fluids is constrained by kinematic reversibility. Here we show that viscoelasticity provides a distinct route: an achiral fore-aft asymmetric bod…
Viscotaxis of chiral microswimmer in viscosity gradients
Takuya Kobayashi, Ryoichi Yamamoto
Microswimmers display an intriguing ability to navigate through fluids with spatially varying viscosity, a behavior known as viscotaxis, which plays a crucial role in guiding their…
Propulsion of a chiral swimmer in viscoelastic fluids
Takuya Kobayashi, John J. Molina, Ryoichi Yamamoto
Microswimmers often use chirality to generate translational movement from rotation motion, exhibiting distinct behaviors in complex fluids compared to simple Newtonian fluids. Howe…
Steady Motions of Single Spherical Microswimmers in Non-Newtonian Fluids
Takuya Kobayashi, Ryoichi Yamamoto
In biological systems, microswimmers often propel themselves through complex media. However, many aspects of swimming mechanisms in non-Newtonian fluids remain unclear. This study…