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5 papers · 2 filters
Controlling cell-matrix traction forces by extracellular geometry
Shiladitya Banerjee, M. Cristina Marchetti
We present a minimal continuum model of strongly adhering cells as active contractile isotropic media and use the model to study the effect of the geometry of the adhesion patch in…
Planar sheets meet negative curvature liquid interfaces
Zhenwei Yao, Mark Bowick, Xu Ma +1
If an inextensible thin sheet is adhered to a substrate with a negative Gaussian curvature it will experience stress due to geometric frustration. We analyze the consequences of su…
Contractile stresses in cohesive cell layers on finite-thickness substrates
Shiladitya Banerjee, M. Cristina Marchetti
Using a minimal model of cells or cohesive cell layers as continuum active elastic media, we examine the effect of substrate thickness and stiffness on traction forces exerted by s…
Soft Sphere Packings at Finite Pressure but Unstable to Shear
S. Dagois-Bohy, B. P. Tighe, J. Simon +2
When are athermal soft sphere packings jammed ? Any experimentally relevant definition must at the very least require a jammed packing to resist shear. We demonstrate that widely u…
Athermal Phase Separation of Self-Propelled Particles with no Alignment
Yaouen Fily, M. Cristina Marchetti
We study numerically and analytically a model of self-propelled polar disks on a substrate in two dimensions. The particles interact via isotropic repulsive forces and are subject…