Zobrazeno 1 - 10
of 265
pro vyhledávání: '"Fernandez‐Nieves, Alberto"'
Traveling Fronts and the Smoothing of the Collective-Motion Phase Transition in Vibrated Polar Disks
Publikováno v:
Physical Review E 109, 054610 (2024)
One of the most well known features of active matter is the tendencey of self-propelled particles to undergo system-wide collective motion. With low enough rotational noise or high enough global density, these systems spontaneously break symmetry and
Externí odkaz:
http://arxiv.org/abs/2406.13646
Autor:
Bantysh, Olga, Nambisan, Jyothishraj, Martínez-Prat, Berta, Fernández-Nieves, Alberto, Sagués, Francesc, Ignés-Mullol, Jordi
Publikováno v:
Physical Review Letters (2024)
We investigate experimentally the dynamic phase transition of a two-dimensional active nematic layer interfaced with a passive liquid crystal. Under a temperature ramp that leads to the transition of the passive liquid into a highly anisotropic lamel
Externí odkaz:
http://arxiv.org/abs/2303.05589
Publikováno v:
Phys. Rev. E 106, 064606 (2022)
The configurations taken by polymers embedded in out-of-equilibrium baths may have broad effects in a variety of biological systems. As such, they have attracted considerable interest, particularly in simulation studies. Here we analyze the distribut
Externí odkaz:
http://arxiv.org/abs/2211.09246
A continuum description is essential for understanding a variety of collective phenomena in active matter. However, building quantitative continuum models of active matter from first principles can be extremely challenging due to both the gaps in our
Externí odkaz:
http://arxiv.org/abs/2202.12853
Autor:
Mahajan, Shivam, Tennenbaum, Michael, Pathak, Sudhir N., Baxter, Devontae, Fan, Xiaochen, Padilla, Pablo, Anderson, Caleb, Fernandez-Nieves, Alberto, Ciamarra, Massimo Pica
Publikováno v:
Phys. Rev. Lett. 124, 128002, 2020
When grains are added to a cylinder, the weight at the bottom is smaller than the total weight of the column, which is partially supported by the lateral walls through wall/grain frictional forces. This is known as the Janssen effect. Via a combined
Externí odkaz:
http://arxiv.org/abs/2005.14404
We present a pedagogical review of the swelling thermodynamics and phase transitions of polymer gels. In particular, we discuss how features of the volume phase transition of the gel's osmotic equilibrium is analogous to other transitions described b
Externí odkaz:
http://arxiv.org/abs/1906.04935
Autor:
Chang, Ya-Wen, Dimitriyev, Michael S., Souslov, Anton, Nikolov, Svetoslav V., Marquez, Samantha M., Alexeev, Alexander, Goldbart, Paul M., Fernandez-Nieves, Alberto
Publikováno v:
Phys. Rev. E 98, 020501(R) (2018)
When a swollen, thermoresponsive polymer gel is heated in a solvent bath, it expels solvent and deswells. When this heating is slow, deswelling proceeds homogeneously, as observed in a toroid-shaped gel that changes volume whilst maintaining its toro
Externí odkaz:
http://arxiv.org/abs/1806.11049
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
Autor:
Wu, Kun-Ta, Hishamunda, Jean Bernard, Chen, Daniel T. N., DeCamp, Stephen J., Chang, Ya-Wen, Fernández-Nieves, Alberto, Fraden, Seth, Dogic, Zvonimir
Publikováno v:
Science 355, eaal1979 (2017)
Transport of fluid through a pipe is essential for the operation of macroscale machines and microfluidic devices. Conventional fluids only flow in response to external pressure. We demonstrate that an active isotropic fluid, comprised of microtubules
Externí odkaz:
http://arxiv.org/abs/1705.02030
The role of aspect ratio and activity on how active nematic defects distribute on toroidal surfaces.
Publikováno v:
Molecular Physics; Nov2024, Vol. 122 Issue 21/22, p1-6, 6p
