67 citations · 324 across the 24 of their papers we have counts for
10 papers · 1 filter
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…
Dynamics of microswimmers near a liquid-liquid interface with viscosity difference
Chao Feng, John J. Molina, Matthew S. Turner +1
Transport of material across liquid interfaces is ubiquitous for living cells and is also a crucial step in drug delivery and in many industrial processes. The fluids that are pres…
Dynamics of microswimmers near a soft penetrable interface
Chao Feng, John J. Molina, Matthew S. Turner +1
Few simulations exist for microswimmers near deformable interfaces. Here, we present numerical simulations of the hydrodynamic flows associated with a single microswimmer embedded…
Collective Motion of Quincke Rollers with Fully Resolved Hydrodynamics
Shun Imamura, Kohei Sawaki, John J. Molina +2
A Quincke roller is a unique active particle that can run and tumble freely on a flat plate due to the torque generated by a uniform DC electric field applied perpendicular to the…
Hydrodynamic synchronization of externally driven colloids
Norihiro Oyama, Kosuke Teshigawara, John Jairo Molina +2
The collective dynamics of externally driven -colloidal systems () in a confined viscous fluid have been investigated using three-dimensional direct…
Hydrodynamic alignment of microswimmers in pipes
Norihiro Oyama, John Jairo Molina, Ryoichi Yamamoto
We investigate the dynamics of model microswimmers under confinement, in cylindrical geometries, by means of three dimensional direct numerical calculations with fully resolved hyd…
Collective motion of cells crawling on a substrate: roles of cell shape and contact inhibition
Simon Kaspar Schnyder, Yuki Tanaka, John Jairo Molina +1
Contact inhibition plays a crucial role in the motility of cells, the process of wound healing, and the formation of tumors. By mimicking the mechanical motion of calls crawling on…
Purely hydrodynamic origin for swarming of swimming particles
Norihiro Oyama, John Jairo Molina, Ryoichi Yamamoto
Three-dimensional simulations with fully resolved hydrodynamics are performed to study the collective motion of model swimmers in confinement. We show that certain swimming mechani…
Direct numerical simulations of rigid body dispersions. I. Mobility/Friction tensors of assemblies of spheres
John Jairo Molina, Ryoichi Yamamoto
An improved formulation of the Smoothed Profile method is introduced to perform direct numerical simulations of arbitrary rigid body dispersions in a Newtonian host solvent. Previo…
Hydrodynamic Interactions of Self-Propelled Swimmers
John J. Molina, Yasuya Nakayama, Ryoichi Yamamoto
The hydrodynamic interactions of a suspension of self-propelled particles are studied using a direct numerical simulation method which simultaneously solves for the host fluid and…