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pro vyhledávání: '"Adar, Ram M."'
Autor:
Adar, Ram M.
Living cells actively regulate their volume in response to changes in the extra-cellular environment, such as osmolarity and chemo-attractant concentration. While the basic physical mechanisms of volume regulation are understood from the classic "pum
Externí odkaz:
http://arxiv.org/abs/2411.01536
Autor:
Adar, Ram M., Joanny, Jean-François
Many active systems display nematic order, while interacting with their environment. In this work, we show theoretically how environment-stored memory acts an effective external field that aligns active nematics. The coupling to the environment leads
Externí odkaz:
http://arxiv.org/abs/2401.03688
Autor:
Adar, Ram M., Joanny, Jean-François
We formulate an active-gel theory for multicellular migration in the extra-cellular matrix (ECM). The cells are modeled as an active, polar solvent, and the ECM as a viscoelastic solid. Our theory enables to analyze the dynamic reciprocity between th
Externí odkaz:
http://arxiv.org/abs/2202.07341
Publikováno v:
Phys. Rev. Lett. 128, 098002 (2022) & Suppl. Material
The conductivity of ionic solutions is arguably their most important trait, being widely used in electrochemical, biochemical, and environmental applications. The Debye-H\"uckel-Onsager theory successfully predicts the conductivity at very low ionic
Externí odkaz:
http://arxiv.org/abs/2110.07008
Autor:
Adar, Ram M., Joanny, Jean-François
We present a theory of active, permeating, polar gels, based on a two-fluid model. An active relative force between the gel components creates a steady-state current. We analyze its stability, while considering two polar coupling terms to the relativ
Externí odkaz:
http://arxiv.org/abs/2104.08325
Publikováno v:
Phys. Rev. E 101, 010601 (2020)
In spite of their enormous applications as alternative energy storage devices and lubricants, room temperature ionic liquids (ILs) still pose many challenges from a pure scientific view point. We develop an IL microscopic theory in terms of ionic clu
Externí odkaz:
http://arxiv.org/abs/1910.02657
Publikováno v:
In Biophysical Journal 7 February 2023 122(3):506-512
Publikováno v:
Phys. Rev. E 100, 042615 (2019)
The classical Debye-Huckel (DH) theory clearly accounts for the origin of screening in electrolyte solutions and works rather well for dilute electrolyte solutions. While the Debye screening length decreases with the ion concentration and is independ
Externí odkaz:
http://arxiv.org/abs/1812.07217
Publikováno v:
Phys. Rev. E 98, 032604 (2018)
We study the steady state response of a dilute monovalent electrolyte solution to an external source with a constant relative velocity with respect to the fluid. The source is taken as a combination of three perturbations: an external force acting on
Externí odkaz:
http://arxiv.org/abs/1806.11292
Publikováno v:
J. Chem. Phys. 149, 054504 (2018)
The dielectric constant of ionic solutions is known to reduce with increasing ionic concentrations. However, the origin of this effect has not been thoroughly explored. In this paper we study two such possible sources: long-range Coulombic correlatio
Externí odkaz:
http://arxiv.org/abs/1806.01607