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4 papers · 2 filters
Hydro-osmotic instabilities in active membrane tubes
Sami C. Al-Izzi, George Rowlands, Pierre Sens +1
We study a membrane tube with unidirectional ion pumps driving an osmotic pressure difference. A pressure driven peristaltic instability is identified, qualitatively distinct from…
Emergence of epithelial cell density waves
Shunsuke Yabunaka, Philippe Marcq
Epithelial cell monolayers exhibit traveling mechanical waves. We rationalize this observation thanks to a hydrodynamic description of the monolayer as a compressible, active and p…
Soft inclusion in a confined fluctuating active gel
Amit Singh Vishen, Jean-Francois Rupprecht, G. V. Shivashankar +2
We study stochastic dynamics of a point and extended inclusion within a one dimensional confined active viscoelastic gel. We show that the dynamics of a point inclusion can be desc…
Maximal fluctuations of confined actomyosin gels: dynamics of the cell nucleus
Jean-Francois Rupprecht, Amit Singh Vishen, G. V. Shivashankar +2
We investigate the effect of stress fluctuations on the stochastic dynamics of an inclusion embedded in a viscous gel. We show that, in non-equilibrium systems, stress fluctuations…