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Beyond Dipolar Activity: Quadrupolar Stress Drives Collapse of Nematic Order on Frictional Substrates
Aleksandra Ardaševa, Ignasi Vélez-Cerón, Martin Cramer Pedersen +3
The field of active nematics has traditionally employed descriptions based on dipolar activity, with interactions that align along a single axis. However, it has been theoretically…
Transport of topological defects in a biphasic mixture of active and passive nematic fluids
KVS Chaithanya, Aleksandra Ardaševa, Oliver J. Meacock +3
Collectively moving cellular systems often contain a proportion of dead cells or non-motile genotypes. When mixed, nematically aligning motile and non-motile agents are known to se…
Active particles knead three-dimensional gels into open crumbs
Martin Cramer Pedersen, Sourav Mukherjee, Amin Doostmohammadi +2
Colloidal gels are prime examples of functional materials exhibiting disordered, amorphous, yet meta-stable forms. They maintain stability through short-range attractive forces and…
Evidence of robust, universal conformal invariance in living biological matter
Benjamin H. Andersen, Francisco M. R. Safara, Valeriia Grudtsyna +5
Collective cellular movement plays a crucial role in many processes fundamental to health, including development, reproduction, infection, wound healing, and cancer. The emergent d…