Zobrazeno 1 - 10
of 245
pro vyhledávání: '"Eric Lauga"'
Publikováno v:
Physical Review Research, Vol 6, Iss 3, p L032070 (2024)
Flagellated bacteria are hydrodynamically attracted to rigid walls, yet past work shows a “hovering” state where they swim stably at a finite height above surfaces. We use numerics and theory to reveal the physical origin of hovering. Simulations
Externí odkaz:
https://doaj.org/article/677c5d4bedb8468eb69ec89d10045226
Publikováno v:
Light: Science & Applications, Vol 13, Iss 1, Pp 1-11 (2024)
Abstract Techniques for high-definition micromanipulations, such as optical tweezers, hold substantial interest across a wide range of disciplines. However, their applicability remains constrained by material properties and laser exposure. And while
Externí odkaz:
https://doaj.org/article/4520ef2cc7974ce98be49650ed95edf3
Natural convection in the cytoplasm: Theoretical predictions of buoyancy-driven flows inside a cell.
Publikováno v:
PLoS ONE, Vol 19, Iss 7, p e0307765 (2024)
The existence of temperature gradients within eukaryotic cells has been postulated as a source of natural convection in the cytoplasm, i.e. bulk fluid motion as a result of temperature-difference-induced density gradients. Recent computations have pr
Externí odkaz:
https://doaj.org/article/0a2cdc7841584b56940b4085e5d948de
Autor:
Albane Théry, Lucas Le Nagard, Jean-Christophe Ono-dit-Biot, Cécile Fradin, Kari Dalnoki-Veress, Eric Lauga
Publikováno v:
Scientific Reports, Vol 10, Iss 1, Pp 1-9 (2020)
Abstract Collective motion is found at all scales in biological and artificial systems, and extensive research is devoted to describing the interplay between interactions and external cues in collective dynamics. Magnetotactic bacteria constitute a r
Externí odkaz:
https://doaj.org/article/c8fc4107d8ae49a98da6eef63b47324a
Publikováno v:
Nature Communications, Vol 11, Iss 1, Pp 1-9 (2020)
Fast control over propulsion direction modulates interactions between self-propelled particles and opens new avenues for the design of active materials. Here, the authors present a light-active system that allows rapid direction reversal, leading to
Externí odkaz:
https://doaj.org/article/648ba698148746daaa39ab28afb67a03
Autor:
Remmi Danae Baker, Thomas Montenegro-Johnson, Anton D. Sediako, Murray J. Thomson, Ayusman Sen, Eric Lauga, Igor. S. Aranson
Publikováno v:
Nature Communications, Vol 10, Iss 1, Pp 1-10 (2019)
While there are many demonstrations of self-propelled synthetic particles, there are fewer realisations of multimode swimming for the same particle. Here the authors demonstrate two swimming behaviours in magnetically manipulated microtori and show t
Externí odkaz:
https://doaj.org/article/8f872cf4f08e4bd3aba697903d477ae0
Publikováno v:
Nature Communications, Vol 10, Iss 1, Pp 1-12 (2019)
Motile and non-motile subpopulations often coexist in bacterial communities. Here, Xu et al. show that motile cells in colonies of common flagellated bacteria can self-organize into two adjacent motile rings, driving stable flows of fluid and materia
Externí odkaz:
https://doaj.org/article/15939aa9ea1a41b1b32e6e97c2963cbe
Publikováno v:
PLoS ONE, Vol 16, Iss 6 (2021)
Unicellular microscopic organisms living in aqueous environments outnumber all other creatures on Earth. A large proportion of them are able to self-propel in fluids with a vast diversity of swimming gaits and motility patterns. In this paper we pres
Externí odkaz:
https://doaj.org/article/743b946689cb4d8083d5bb61de48e418
Autor:
Mariia Dvoriashyna, Eric Lauga
Publikováno v:
PLoS ONE, Vol 16, Iss 7, p e0254551 (2021)
The bacterium Escherichia coli (E. coli) swims in viscous fluids by rotating several helical flagellar filaments, which are gathered in a bundle behind the cell during 'runs' wherein the cell moves steadily forward. In between runs, the cell undergoe
Externí odkaz:
https://doaj.org/article/35ad0fc9560f4dfcb684b1a185e357ef
Publikováno v:
Scientific Reports, Vol 8, Iss 1, Pp 1-7 (2018)
Abstract Peritrichously-flagellated bacteria, such as Escherichia coli, self-propel in fluids by using specialised motors to rotate multiple helical filaments. The rotation of each motor is transmitted to a short flexible segment called the hook whic
Externí odkaz:
https://doaj.org/article/223a6e40a9224c349d9a2edf18f77b27