Zobrazeno 1 - 10
of 199
pro vyhledávání: '"Giomi, L."'
During metastatic dissemination, streams of cells collectively migrate through a network of narrow channels within the extracellular matrix, before entering into the blood stream. This strategy is believed to outperform other migration modes, based o
Externí odkaz:
http://arxiv.org/abs/2010.15555
We investigate the emergence of orientational order among +1/2 disclinations in active nematic liquid crystals. Using a combination of theoretical and experimental methods, we show that +1/2 disclinations have short-range antiferromagnetic alignment,
Externí odkaz:
http://arxiv.org/abs/2004.13704
Teams of cooperating sperm have been found across several vertebrate and invertebrate species, ranging from sperm pairs to massive aggregates containing hundreds of cells. Although the biochemical mechanisms involved in the aggregation process are st
Externí odkaz:
http://arxiv.org/abs/1805.12116
Publikováno v:
Phys. Rev. Lett. 122, 168002 (2019)
We investigate the turbulent dynamics of a two-dimensional active nematic liquid crystal con- strained on a curved surface. Using a combination of hydrodynamic and particle-based simulations, we demonstrate that the fundamental structural features of
Externí odkaz:
http://arxiv.org/abs/1805.01455
Publikováno v:
Phys. Rev. Lett. 120, 208101 (2018)
In vitro epithelial monolayers exhibit a rich repertoire of collective dynamical behaviours according to microenvironment mechanical features. We investigate the statistical and dynamical properties of human bronchial epithelial cell (HBEC) flows in
Externí odkaz:
http://arxiv.org/abs/1711.01568
Autor:
Pearce, D. J. G., Giomi, L.
Publikováno v:
Phys. Rev. E 94, 022612 (2016)
Large collections of autonomously moving agents, such as animals or micro-organisms, are able to 'flock' coherently in space even in the absence of a central control mechanism. While the direction of the flock resulting from this critical behavior is
Externí odkaz:
http://arxiv.org/abs/1511.03652
Sperm cooperation has evolved in a variety of taxa and is often considered a response to sperm competition, yet the benefit of this form of collective movement remains unclear. Here we use fine-scale imaging and a minimal mathematical model to study
Externí odkaz:
http://arxiv.org/abs/1407.0666
Autor:
Giomi, L., DeSimone, A.
Publikováno v:
Phys. Rev. Lett. 112, 147802 (2014)
We investigate the mechanics of an active droplet endowed with internal nematic order and surrounded by an isotropic Newtonian fluid. Using numerical simulations we demonstrate that, due to the interplay between the active stresses and the defective
Externí odkaz:
http://arxiv.org/abs/1310.1908
Publikováno v:
Proc. R. Soc. A 469, 20120637 (2013)
The collective ability of organisms to move coherently in space and time is ubiquitous in any group of autonomous agents that can move and sense each other and the environment. Here we investigate the origin of collective motion and its loss using ma
Externí odkaz:
http://arxiv.org/abs/1302.5952
Autor:
Giomi, L., Mahadevan, L.
Publikováno v:
Phys. Rev. Lett. 107, 239802 (2011)
Starostin and van der Heijden [arXiv:1111.2029] question the validity of the results reported in our Letter [Phys. Rev. Lett. 104, 238104 (2010)] regarding the existence of spontaneous helical structure in finite-temperature developable ribbons. Acco
Externí odkaz:
http://arxiv.org/abs/1111.2243