17 citations · 48 across the 9 of their papers we have counts for
6 papers · 1 filter
A computational study of nematic core structure and disclination interactions in elastically anisotropic nematics
Lucas Myers, Carter Swift, Jonas Ronning +2
A singular potential method in the Q tensor order parameter representation of a nematic liquid crystal is used to study the equilibrium configuration of a disclination dipole. Unli…
Spontaneous flows and dynamics of full-integer topological defects in polar active matter
Jonas Rønning, Julian Renaud, Amin Doostmohammadi +1
Polar active matter of self-propelled particles sustain spontaneous flows through the full-integer topological defects. We study theoretically the effect of both polar and dipolar…
A unified field theory of topological defects and non-linear local excitations
Vidar Skogvoll, Jonas Rønning, Marco Salvalaglio +1
Topological defects and smooth excitations determine the properties of systems showing collective order. We introduce a generic non-singular field theory that comprehensively descr…
Symmetry-restoring crossover from defect-free to defect-laden turbulence in polar active matter
Benjamin H. Andersen, Julian Renaud, Jonas Rønning +2
Coherent flows of self-propelled particles are characterized by vortices and jets that sustain chaotic flows, referred to as active turbulence. Here, we reveal a crossover between…
Defect self-propulsion in active nematic films with spatially-varying activity
Jonas Rønning, M. Cristina Marchetti, Luiza Angheluta
We study the dynamics of topological defects in active nematic films with spatially-varying activity and consider two setups: i) a constant activity gradient, and ii) a sharp jump…
Flow around topological defects in active nematic films
Jonas Rønning, M. Cristina Marchetti, Mark J. Bowick +1
We study the active flow around isolated defects and the self-propulsion velocity of defects in an active nematic film with both viscous dissipation (with viscosity ) and…