93 citations · 335 across the 13 of their papers we have counts for
13 papers
Controlling pair dynamics of rotating magnetic microparticles through radial and transverse interactions
Dongfang Fu, Leilei Wang, Kailai Wang +2
Rotating magnetic microparticles are building blocks for field-driven assembly and microrobotic control. As the elementary interaction rule for larger assemblies, pair motion in th…
Dynamics of a microroller under confinement
Han Gao, Nan Xie, Zaiyi Shen +3
Rotating particles can translate when placed near a surface, forming microrollers with a wide range of biomedical and microfluidic applications. In this work, we investigate the dy…
Collective Flows Drive Cavitation in Spinner Monolayers
Zaiyi Shen, Juho S. Lintuvuori
Hydrodynamic interactions can give rise to a collective motion of rotating particles. This, in turn, can lead to coherent fluid flows. Using large scale hydrodynamic simulations, w…
Unsteady drag force on an immersed sphere oscillating near a wall
Zaicheng Zhang, Vincent Bertin, Martin Essink +6
The unsteady hydrodynamic drag exerted on an oscillating sphere near a planar wall is addressed experimentally, theoretically, and numerically. The experiments are performed by usi…
Reorientation dynamics of microswimmers at fluid-fluid interfaces
Harinadha Gidituri, Zaiyi Shen, Alois Wurger +1
We study the orientational and translational dynamics of spherical microswimmers trapped at fluid interfaces, in terms of the force dipole and source dipole components of their flo…
Inertial clustering and emergent phase separation of spherical spinners
Zaiyi Shen, Juho S. Lintuvuori
We study the hydrodynamics of spherical spinners suspended in a Newtonian fluid at inertial regime. We observe a spontaneous condensation of the spinners into particle rich regions…
Gravity induced formation of spinners and polar order of spherical microswimmers on a surface
Zaiyi Shen, Juho S. Lintuvuori
We study numerically the hydrodynamics of a self-propelled particle system, consisting of spherical squirmers sedimented on a flat surface. We observe the emergence of dynamic stru…
Optimal cell transport in straight channels and networks
Alexander Farutin, Zaiyi Shen, Gael Prado +9
Flux of rigid or soft particles (such as drops, vesicles, red blood cells, etc.) in a channel is a complex function of particle concentration, which depends on the details of induc…
Predicting optimal hematocrit in silico
Alexander Farutin, Zaiyi Shen, Gael Prado +9
Optimal hematocrit maximizes oxygen transport. In healthy humans, the average hematocrit is in the range of 40-45, but it can significantly change in blood pathologie…
Hydrodynamic assembly of active colloids: chiral spinners and dynamic crystals
Zaiyi Shen, Alois Würger, Juho S. Lintuvuori
Active colloids self-organise to a variety of collective states, ranging from highly motile 'molecules' to complex 3D structures. Using large-scale simulations, we show that hydrod…
Hydrodynamic interaction of a self-propelling particle with a wall: Comparison between an active Janus particle and a squirmer model
Zaiyi Shen, Alois Würger, Juho S. Lintuvuori
Using lattice Boltzmann simulations we study the hydrodynamics of an active spherical particle near a no-slip wall. We develop a computational model for an active Janus particle, b…
Blood crystal: emergent order of red blood cells under wall-confined shear flow
Zaiyi Shen, Thomas M. Fischer, Alexander Farutin +3
Driven or active suspensions can display fascinating collective behavior, where coherent motions or structures arise on a scale much larger than that of the constituent particles.…
Inversion of hematocrit partition at microfluidic bifurcations
Zaiyi Shen, Gwennou Coupier, Badr Kaoui +4
Partitioning of red blood cells (RBCs) at the level of bifurcations in the microcirculatory system affects many physiological functions yet it remains poorly understood. We address…