Results 91 to 100 of about 698 (179)

Analytical response functions for a compressible thin fluid layer with odd viscosity

New Journal of Physics
Fluids composed of chiral active components can exhibit odd viscosity, a property that breaks time-reversal and parity symmetries. We investigate the hydrodynamic response to monopole and dipole singularities in a compressible thin fluid layer with odd ...
Abdallah Daddi-Moussa-Ider, Yuto Hosaka, Shigeyuki Komura   +2 more
doaj   +1 more source

A Hybrid Physics‐Informed Computational Framework for Adaptive Microrobotic Navigation and Causal Structure Discovery in Simulated Non‐Newtonian Environments

Applied Research, Volume 5, Issue 5, October 2026.
This study presents a hybrid AI framework that enables autonomous magnetic microrobots to navigate complex, non‐Newtonian tumor microenvironments. By integrating physics‐informed recurrent reinforcement learning with active persistent excitation, the system successfully infers hidden fluid rheology for precise targeted navigation and structural causal ...
Xinyuan Chen, Zanariah Abu Bakar, Mohd Nizam Husen   +2 more
wiley   +1 more source

Thrust and Hydrodynamic Efficiency of the Bundled Flagella

Micromachines, 2019
The motility mechanism of prokaryotic organisms has inspired many untethered microswimmers that could potentially perform minimally invasive medical procedures in stagnant fluid regions inside the human body.
Umit Danis, Reza Rasooli, Chia-Yuan Chen, Onur Dur, Metin Sitti, Kerem Pekkan   +5 more
doaj   +1 more source

Tactic Behaviors in Asymmetric Pacman Particles

Small, Volume 22, Issue 56, 8 October 2026.
The swimming behavior of TiO2 Pacman particles exhibits different modes depending on the fuel and illumination conditions. However, the behavior of these intrinsically asymmetric particles is still not well understood, and here we present a first approach to modeling their dynamics. Furthermore, we investigate their fundamental responses to some of the
Daniel Gordon, Jeremie Marc Bertrand, Zuyao Xiao, Amir Sheikhshoaei, Sankha Shuvra Das, Gilad Yossifon, Sara Bonella, Ignacio Pagonabarraga, Juliane Simmchen   +8 more
wiley   +1 more source

Confined active Brownian particles: theoretical description of propulsion-induced accumulation

New Journal of Physics, 2018
The stationary-state distribution function of confined active Brownian particles (ABPs) is analyzed by computer simulations and analytical calculations. We consider a radial harmonic as well as an anharmonic confinement potential. In the simulations, the
Shibananda Das, Gerhard Gompper, Roland G Winkler   +2 more
doaj   +1 more source

Microswimmers Knead Nematics into Cholesterics

Physical Review Letters
The hydrodynamic stresses created by active particles can destabilise orientational order present in the system. This is manifested, for example, by the appearance of a bend instability in active nematics or in quasi-2-dimensional living liquid crystals consisting of swimming bacteria in thin nematic films.
Gautam, Bhavesh, Lintuvuori, Juho S.
openaire   +4 more sources

Collision of microswimmers in a viscous fluid

Physical Review E, 2013
We investigate the effects of boundary conditions on the surface of self-propelled spherical swimmers moving in a viscous fluid with a low Reynolds number. We first show that collisions between the swimmers are impossible under the commonly used no-slip conditions.
M, Potomkin, V, Gyrya, I, Aranson, L, Berlyand   +3 more
openaire   +3 more sources

The collective motion of a binary pusher-puller mixture in viscoelastic fluids

Engineering Applications of Computational Fluid Mechanics
This study investigates the collective dynamics of the binary pusher-puller mixtures in Giesekus viscoelastic fluids using the fictitious domain method, with a focus on the synergistic effects of the mixture composition and fluid elasticity on clustering
Minkang Zhang, Zhaosheng Yu, Yan Xia, Chenlin Zhu, Zhaowu Lin, Wei Lu   +5 more
doaj   +1 more source

PROFILES OF HUMAN SPERM DENSITY IN LONG ASYMMETRIC MICROCHANNELS

Anales (Asociación Física Argentina)
The development of microfluidic devices presents itself as an innovative approach to improving current assisted reproduction techniques, which are far from being highly efficient.
M. Palacio Fornero, M. A. Bettera Marcat, A. J. Banchio, V. I. Marconi   +3 more
doaj   +1 more source

Setting the pace of microswimmers: when increasing viscosity speeds up self-propulsion

New Journal of Physics, 2017
It has long been known that some microswimmers seem to swim counter-intuitively faster when the viscosity of the surrounding fluid is increased, whereas others slow down.
Jayant Pande, Laura Merchant, Timm Krüger, Jens Harting, Ana-Sunčana Smith   +4 more
doaj   +1 more source