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11 papers · 2 filters
Scaling of Traction Forces with Size of Cohesive Cell Colonies
Aaron F. Mertz, Shiladitya Banerjee, Yonglu Che +6
To understand how the mechanical properties of tissues emerge from interactions of multiple cells, we measure traction stresses of cohesive colonies of 1-27 cells adherent to soft…
Molecular Tilt on Monolayer-Protected Nanoparticles
Luca Giomi, Mark J. Bowick, Xu Ma +1
The structure of the tilted phase of monolayer-protected nanoparticles is investigated by means of a simple Ginzburg-Landau model. The theory contains two dimensionless parameters…
The Electric Double Layer Structure Around Charged Spherical Interfaces
Zhenwei Yao, Mark J. Bowick, Xu Ma
We derive a formally simple approximate analytical solution to the Poisson-Boltzmann equation for the spherical system via a geometric mapping. Its regime of applicability in the p…
Morphology of Nematic and Smectic Vesicles
Xiangjun Xing, Homin Shin, Mark J. Bowick +3
Recent experiments on vesicles formed from block copolymers with liquid-crystalline side-chains reveal a rich variety of vesicle morphologies. The additional internal order ("struc…
Generic phases of cross-linked active gels: Relaxation, Oscillation and Contractility
Shiladitya Banerjee, Tanniemola B. Liverpool, M. Cristina Marchetti
We study analytically and numerically a generic continuum model of an isotropic active solid with internal stresses generated by non-equilibrium `active' mechano-chemical reactions…
Active Jamming: Self-propelled soft particles at high density
Silke Henkes, Yaouen Fily, M. Cristina Marchetti
We study numerically the phases and dynamics of a dense collection of self-propelled particles with soft repulsive interactions in two dimensions. The model is motivated by recent…