Zobrazeno 1 - 10
of 81
pro vyhledávání: '"Andrej Vilfan"'
Publikováno v:
Physical Review Research, Vol 6, Iss 3, p L032044 (2024)
Odd viscosity is a property of chiral active fluids with broken time-reversal and parity symmetries. We show that the flow of such a fluid around a rotating axisymmetric body is exactly solvable and use this solution to determine the orientational dy
Externí odkaz:
https://doaj.org/article/210d0743be4a467fb5744bad36dbacc3
Publikováno v:
Nature Communications, Vol 14, Iss 1, Pp 1-12 (2023)
Abstract The energy dissipation and entropy production by self-propelled microswimmers differ profoundly from passive particles pulled by external forces. The difference extends both to the shape of the flow around the swimmer, as well as to the inte
Externí odkaz:
https://doaj.org/article/a2974bee0d114ed796a6c038c6a9365d
Publikováno v:
Physical Review Research, Vol 6, Iss 1, p 013274 (2024)
We study the energetic efficiency of navigating microswimmers by explicitly taking into account the geometry of their body. We show that, whereas arguments based solely on propulsion efficiency lead one to conclude that needle-like swimmers are most
Externí odkaz:
https://doaj.org/article/bbe0e3e616e14803a1c9085e4b36506b
Publikováno v:
Physical Review Research, Vol 5, Iss 3, p 033030 (2023)
The Green's function plays an important role in many areas of physical sciences and is a prime tool for solving diverse hydrodynamic equations in the linear regime. In the present contribution, the axisymmetric low-Reynolds-number Brinkman flow induc
Externí odkaz:
https://doaj.org/article/917e6e3757234417b552d0e3b4758815
Publikováno v:
eLife, Vol 10 (2021)
Cilia are hairlike organelles involved in both sensory functions and motility. We discuss the question of whether the location of chemical receptors on cilia provides an advantage in terms of sensitivity and whether motile sensory cilia have a furthe
Externí odkaz:
https://doaj.org/article/02b6650469f343e694718969b858271e
Publikováno v:
Frontiers in Physiology, Vol 11 (2020)
The endothelium is the cell monolayer that lines the interior of the blood vessels separating the vessel lumen where blood circulates, from the surrounding tissues. During embryonic development, endothelial cells (ECs) must ensure that a tight barrie
Externí odkaz:
https://doaj.org/article/308cc849d0f147cdb9e33f93f17aab05
Autor:
Fanlong Meng, Antonio Ortiz-Ambriz, Helena Massana-Cid, Andrej Vilfan, Ramin Golestanian, Pietro Tierno
Publikováno v:
Physical Review Research, Vol 2, Iss 1, p 012025 (2020)
We investigate the collective colloidal current that emerges when strongly confined magnetic microspheres are subjected to a biased, but spatially uniform, precessing magnetic field. We observe a net bidirectional current composed of colloidal partic
Externí odkaz:
https://doaj.org/article/2fd1afdcc1554953bd42f66923ac23e1
Autor:
Rita R. Ferreira, Guillaume Pakula, Lhéanna Klaeyle, Hajime Fukui, Andrej Vilfan, Willy Supatto, Julien Vermot
Publikováno v:
Cell Reports, Vol 25, Iss 8, Pp 2008-2016.e4 (2018)
Summary: Chirality is a property of asymmetry between an object and its mirror image. Most biomolecules and many cell types are chiral. In the left-right organizer (LRO), cilia-driven flows transfer such chirality to the body scale. However, the exis
Externí odkaz:
https://doaj.org/article/368e9e0551714182a42645b152b0eb24
Publikováno v:
eLife, Vol 6 (2017)
Fluid flows generated by motile cilia are guiding the establishment of the left-right asymmetry of the body in the vertebrate left-right organizer. Competing hypotheses have been proposed: the direction of flow is sensed either through mechanosensati
Externí odkaz:
https://doaj.org/article/d1e38b0959cc45e7ad400025757501f8
Autor:
Andreja Šarlah, Andrej Vilfan
Publikováno v:
PLoS ONE, Vol 12, Iss 10, p e0185948 (2017)
Motor proteins generally have a two-way coupling between the ATP hydrolysis site, the lever movement and the binding affinity for their track, which allows them to perform efficient stepping. Here we explore the minimal requirements for directed moti
Externí odkaz:
https://doaj.org/article/7a084e6e9f47405489572da564523e88