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50 papers · 1 filter
Steering Active-Colloid Assembly by Biasing Dissipation
Chaoqun Du, Zhiyu Cao, Zhonghuai Hou
Complex nonequilibrium self-assembly enables the formation of materials with specific patterns and functions from the bottom up. How to directionally control the assembly to form t…
Criticality enhances the reinforcement of disordered networks by rigid inclusions
Jordan L. Shivers, Jingchen Feng, Fred C. MacKintosh
The mechanical properties of biological materials are spatially heterogeneous. Typical tissues are made up of a spanning fibrous extracellular matrix in which various inclusions, s…
Nonlinear Poisson effect in affine semiflexible polymer networks
Jordan L. Shivers, Fred C. MacKintosh
Stretching an elastic material along one axis typically induces contraction along the transverse axes, a phenomenon known as the Poisson effect. From these strains, one can compute…
Effective Medium Theory for Mechanical Phase Transitions of Fiber Networks
Sihan Chen, Tomer Markovich, Fred C. MacKintosh
Networks of stiff fibers govern the elasticity of biological structures such as the extracellular matrix of collagen. These networks are known to stiffen nonlinearly under shear or…
Mechanical criticality of fiber networks at a finite temperature
Sadjad Arzash, Anupama Gannavarapu, Fred C. MacKintosh
At zero temperature, spring networks with connectivity below Maxwell's isostatic threshold undergo a mechanical phase transition from a floppy state at small strains to a rigid sta…
Bridging the Gap Between Collective Motility and Epithelial-Mesenchymal Transitions through the Active Finite Voronoi Model
Junxiang Huang, Herbert Levine, Dapeng Bi
We introduce an active version of the recently proposed finite Voronoi model of epithelial tissue. The resultant Active Finite Voronoi (AFV) model enables the study of both conflue…