Zobrazeno 1 - 10
of 81
pro vyhledávání: '"Tjhung, Elsen"'
We present a two-phase field model and a hybrid particle-phase field model to simulate dilute colloidal sedimentation and flotation near a liquid-gas interface (or fluid-fluid interface in general). Both models are coupled to the incompressible Stoke
Externí odkaz:
http://arxiv.org/abs/2407.18850
Autor:
Daddi-Moussa-Ider, Abdallah, Tjhung, Elsen, Pradas, Marc, Richter, Thomas, Menzel, Andreas M.
Dynamics at low Reynolds numbers experiences recent revival in the fields of biophysics and active matter. While in bulk isotropic fluids it is exhaustively studied, this is less so in anisotropic fluids and in confined situations. Here, we combine t
Externí odkaz:
http://arxiv.org/abs/2407.02267
To make progress towards the development of a theory on the motion of inclusions in thin structured films and membranes, we here consider as an initial step a circular disk in a two-dimensional, uniaxially anisotropic fluid layer. We assume overdampe
Externí odkaz:
http://arxiv.org/abs/2403.13755
Publikováno v:
Entropy 24, 254 (2022)
Many complex fluids can be described by continuum hydrodynamic field equations, to which noise must be added in order to capture thermal fluctuations. In almost all cases, the resulting coarse-grained stochastic partial differential equations carry a
Externí odkaz:
http://arxiv.org/abs/2111.08992
Autor:
Mitchell, Emma, Tjhung, Elsen
We consider a minimal computational model of tissue dynamics with two active ingredients: local particle division and apoptosis. We neglect other non-equilibrium effects such as self-propulsion. We simulated the steady state dynamics inside an asymme
Externí odkaz:
http://arxiv.org/abs/2109.13706
Publikováno v:
Phys. Rev. Lett. 127, 068001 (2021)
In passive fluid-fluid phase separation, a single interfacial tension sets both the capillary fluctuations of the interface and the rate of Ostwald ripening. We show that these phenomena are governed by two different tensions in active systems, and c
Externí odkaz:
http://arxiv.org/abs/2103.15563
Publikováno v:
Phys. Rev. X 11, 021057 (2021)
The hallmark of active matter is the autonomous directed motion of its microscopic constituents driven by consumption of energy resources. This leads to the emergence of large scale dynamics and structures without any equilibrium equivalent. Though a
Externí odkaz:
http://arxiv.org/abs/2008.06735
Publikováno v:
Phys. Rev. Research 2, 032024 (2020)
The swimming of cells, far from any boundary, can arise in the absence of long-range liquid-crystalline order within the cytoplasm, but simple models of this effect are lacking. Here we present a two-dimensional model of droplet self-propulsion invol
Externí odkaz:
http://arxiv.org/abs/2004.06064
Autor:
Tjhung, Elsen, Berthier, Ludovic
Publikováno v:
Phys. Rev. Research 2, 043334 (2020)
We develop a minimal model to describe growing dense active matter such as biological tissues, bacterial colonies and biofilms, that are driven by a competition between particle division and steric repulsion. We provide a detailed numerical analysis
Externí odkaz:
http://arxiv.org/abs/2002.00622
Many biological systems, such as bacterial suspensions and actomyosin networks, form polar liquid crystals. These systems are `active' or far-from-equilibrium, due to local forcing of the solvent by the constituent particles. In many cases the source
Externí odkaz:
http://arxiv.org/abs/1908.00079