Results 141 to 150 of about 4,513 (242)

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

Stability of a Dumbbell Micro-Swimmer

Micromachines, 2019
A squirmer model achieves propulsion by generating surface squirming velocities. This model has been used to analyze the movement of micro-swimmers, such as microorganisms and Janus particles.
Takuji Ishikawa
doaj   +1 more source

Double‐Layered Metal‐Organic‐Frameworks‐Based Microswimmers for Adaptive Dual‐Drug Anti‐Cancer Therapy Using Artemisinin‐Based Compounds

Advanced Intelligent Systems
Magnetic microrobots have the potential for anti‐cancer drug delivery; however, using dual‐drug to counter drug resistance, a critical issue in cancer research, has only been briefly investigated.
Yukun Zhong, Haining Li, Teng Jiang, Xueliang Mu, Munetoshi Seki, U Kei Cheang   +5 more
doaj   +1 more source

Synthetic Chemotaxis and Collective Behavior in Active Matter

, 2018
Conspectus: The ability to navigate in chemical gradients, called chemotaxis, is crucial for the survival of microorganisms. It allows them to find food and to escape from toxins.
Benno Liebchen, Eisenbach M., Hartmut Löwen, Murray J. D.   +3 more
core   +1 more source

Simulation of a model microswimmer

Journal of Physics: Condensed Matter, 2009
We discuss the modelling of a microswimmer that operates in a 'squirmer' mode, by means of stochastic rotation dynamics. The squirmer that we model can easily be tuned between a 'pusher' and a 'puller'. We examine the flows produced by the squirmer and find that there is good agreement between both the predicted and simulated velocities of locomotion ...
Downton, Matthew T, Stark, Holger
openaire   +3 more sources

Anomalous rheology of puller-type microswimmer suspensions

Physical Review Research
We explore the mechanism underlying the anomalous rheology of puller-type microswimmer suspensions through direct hydrodynamic simulations. Puller-type swimmers generate contractile flow fields along their swimming direction, leading to hydrodynamic ...
Haruki Hayano, Akira Furukawa
doaj   +1 more source

Anomalous Long-Ranged Influence of an Inclusion in Momentum-Conserving Active Fluids

Physical Review X
We show that an inclusion placed inside a dilute Stokesian suspension of microswimmers induces power-law number-density modulations and flows. These take a different form depending on whether the inclusion is held fixed by an external force—for example ...
Thibaut Arnoulx de Pirey, Yariv Kafri, Sriram Ramaswamy   +2 more
doaj   +1 more source

Hyper-Ballistic Superdiffusion of Competing Microswimmers

Entropy
Hyper-ballistic diffusion is shown to arise from a simple model of microswimmers moving through a porous media while competing for resources. By using a mean-field model where swimmers interact through the local concentration, we show that a non-linear Fokker–Planck equation arises.
Kristian Stølevik Olsen, Alex Hansen, Eirik Grude Flekkøy   +2 more
openaire   +4 more sources

Collective motion in a sheet of microswimmers

Communications Physics
Self-propelled particles such as bacteria or algae swimming through a fluid are non-equilibrium systems where particle motility breaks microscopic detailed balance, often resulting in large-scale collective motion.
Dóra Bárdfalvy, Viktor Škultéty, Cesare Nardini, Alexander Morozov, Joakim Stenhammar   +4 more
doaj   +1 more source

Catalytically Propelled Micro- and Nanoswimmers. [PDF]

Small Sci, 2023
Jang B, Ye M, Hong A, Wang X, Liu X, Bae D, Puigmartí Luis J, Pané S.   +7 more
europepmc   +1 more source