Results 21 to 30 of about 4,513 (242)
Energetic cost of microswimmer navigation: The role of body shape [PDF]
Physical Review Research, 2023 We study the energetic efficiency of navigating microswimmers by explicitly taking into account the geometry of their body. We show that, as their shape transitions from prolate to oblate, non-steering microswimmers rotated by flow gradients naturally ...
Lorenzo Piro +3 more
semanticscholar +1 more source
Three-sphere swimmer in two dimensions at low Reynolds number condition [PDF]
مهندسی مکانیک شریف, 2022 Being widely ubiquitous in fluidic mediums from aquatic environments to bodies, for the sake of their mobility, microorganisms, such as bacteria and motile cells, make use of particular swimming strategies that are counter-intuitive to that of our daily ...
A. Sheikhshoaei, M. Rajabi
doaj +1 more source
Opto-thermoelectric microswimmers [PDF]
Light: Science & Applications, 2020 AbstractInspired by the “run-and-tumble” behaviours of Escherichia coli (E. coli) cells, we develop opto-thermoelectric microswimmers. The microswimmers are based on dielectric-Au Janus particles driven by a self-sustained electrical field that arises from the asymmetric optothermal response of the particles. Upon illumination by a defocused laser beam,
Xiaolei Peng +6 more
openaire +2 more sources
Reinforcement learning with artificial microswimmers [PDF]
Science Robotics, 2021 Microscopic active particles exhibit adaptive behavior under real-world conditions with reinforcement learning.
S. Muiños-Landin +3 more
openaire +3 more sources
Emergence of active turbulence in microswimmer suspensions due to active hydrodynamic stress and volume exclusion [PDF]
Communications Physics, 2021 Microswimmers exhibit an intriguing, highly-dynamic collective motion with large-scale swirling and streaming patterns, denoted as active turbulence – reminiscent of classical high-Reynolds-number hydrodynamic turbulence. Various experimental, numerical,
K. Qi +3 more
semanticscholar +1 more source
Photogravitactic Microswimmers [PDF]
Advanced Functional Materials, 2018 AbstractPhototactic microorganisms are commonly observed to respond to natural sunlight by swimming upward against gravity. This study demonstrates that synthetic photochemically active microswimmers can also swim against gravity. The particles initially sediment and, when illuminated at low light intensities exhibit wall‐bound states of motion near ...
Dhruv P. Singh +4 more
openaire +4 more sources
Magnetic microswimmers with infrared‐induced shape transformation
Micro & Nano Letters, 2021 Soft untethered microswimmers have recently been demonstrated to be capable of transporting and delivering cargos by external control while maintaining biocompatibility and safety.
Runhuai Yang +4 more
doaj +1 more source
The European Physical Journal Special Topics, 2016 Hot microswimmers are self-propelled Brownian particles that exploit local heating for their directed self-thermophoretic motion. We provide a pedagogical overview of the key physical mechanisms underlying this promising new technology. It covers the hydrodynamics of swimming, thermophoresis and -osmosis, hot Brownian motion, force-free steering, and ...
Kroy, Klaus +2 more
openaire +2 more sources
Interaction of the mechanosensitive microswimmer Paramecium with obstacles
Royal Society Open Science, 2023 In this work, we report investigations of the swimming behaviour of Paramecium tetraurelia, a unicellular microorganism, in micro-engineered pools that are decorated with thousands of cylindrical pillars.
Nicolas Escoubet +3 more
doaj +1 more source
Ferromagnetic Microswimmers [PDF]
Physical Review Letters, 2008 We propose a model for a novel artificial low Reynolds number swimmer, based on the magnetic interactions of a pair of ferromagnetic particles: one with hard and the other with soft magnetic properties, connected by a linear spring. Using a computational model, we analyze the behavior of the system and demonstrate that for realistic values of the ...
Ogrin, Feodor Y. +2 more
openaire +3 more sources