[HTML][HTML] Reinforcement learning of a multi-link swimmer at low Reynolds numbers

K Qin, Z Zou, L Zhu, OS Pak - Physics of Fluids, 2023 - pubs.aip.org
The use of machine learning techniques in the development of microscopic swimmers has
drawn considerable attention in recent years. In particular, reinforcement learning has been …

Purcell's swimmer in a shear-thinning fluid

K Qin, OS Pak - Physical Review Fluids, 2023 - APS
Locomotion of biological and artificial microswimmers has received considerable attention
due to its fundamental biological relevance and promising biomedical applications such as …

Enhanced clamshell swimming with asymmetric beating at low Reynolds number

S Hu, J Zhang, MJ Shelley - Soft Matter, 2022 - pubs.rsc.org
A single flexible filament can be actuated to escape from the scallop theorem and generate
net propulsion at low Reynolds number. In this work, we study the dynamics of a simple …

Enhancing magnetically driven microswimmer velocity via low Reynolds number hydrodynamic interactions

S Sharanya, A Gupta, TS Singh - Journal of Physics D: Applied …, 2024 - iopscience.iop.org
The motion of comoving magnetic microswimmers is modeled by considering the inter-
hydrodynamic interactions (HI) under low Reynolds number conditions. The microswimmer …

Autonomously propelled colloids for penetration and payload delivery in complex extracellular matrices

S Singh, JL Moran - Micromachines, 2021 - mdpi.com
For effective treatment of diseases such as cancer or fibrosis, it is essential to deliver
therapeutic agents such as drugs to the diseased tissue, but these diseased sites are …

Spontaneous oscillation of an active filament under viscosity gradients

Z Liu, Y Chao, Z Zheng, L Zhu - Soft Matter, 2024 - pubs.rsc.org
We investigate the effects of uniform viscosity gradients on the spontaneous oscillations of
an elastic, active filament in viscous fluids. Combining numerical simulations and linear …

Elastohydrodynamic propulsion of a filament magnetically driven at both ends

A Gürbüz, K Qin, JJ Abbott, OS Pak - Soft Matter, 2023 - pubs.rsc.org
The elastohydrodynamic interaction between an elastic filament and its surrounding fluid
was exploited to develop the first microswimmers. These flexible microswimmers are …

Self-diffusiophoretic propulsion of a spheroidal particle in a shear-thinning fluid

G Zhu, B van Gogh, L Zhu, OS Pak… - Journal of Fluid …, 2024 - cambridge.org
Shear-thinning viscosity is a non-Newtonian behaviour that active particles often encounter
in biological fluids such as blood and mucus. The fundamental question of how this …

[HTML][HTML] A finite element method for simulating soft active non-shearable rods immersed in generalized Newtonian fluids

RF Ausas, CG Gebhardt, GC Buscaglia - Communications in Nonlinear …, 2022 - Elsevier
We propose a finite element method for simulating one-dimensional solid models with finite
thickness and finite length that move and experience large deformations while immersed in …

Model-guided Navigation of Magnetic Soft Guidewire for Safe Endovascular Surgery

J Li, H Chen, L Wang - Journal of the Mechanics and Physics of Solids, 2024 - Elsevier
The emergent magnetic soft guidewires (MSGs) that can be remotely navigated by magnetic
fields hold great promise in minimally invasive endovascular surgery. However, existing …