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…
Directional Symmetry Breaking of Spherical Active Colloids by Magnetoviscous Coupling
Ziyang Zhou, Takuya Kobayashi, Keita Saito +5
Harnessing active matter calls for strategies that break the directional symmetry of self-propelled motion without altering the propulsion mechanism itself. Here, we show that magn…
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…
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…