8 papers
Activity-induced instabilities of brain organoids
Kristian Thijssen, Guido L. A. Kusters, Amin Doostmohammadi
We present an analytical and numerical investigation of the activity-induced hydrodynamic instabilities in model brain organoids. While several mechanisms have been introduced to e…
Submersed Micropatterned Structures Control Active Nematic Flow, Topology and Concentration
Kristian Thijssen, Dimitrius Khaladj, S. Ali Aghvami +5
Coupling between flows and material properties imbues rheological matter with its wide-ranging applicability, hence the excitement for harnessing the rheology of active fluids for…
Binding self-propelled topological defects in active turbulence
Kristian Thijssen, Amin Doostmohammadi
We report on the emergence of stable self-propelled bound defects in monolayers of active nematics, which form virtual full-integer topological defects in the form of vortices and…
Role of friction in multidefect ordering
Kristian Thijssen, Mehrana R. Nejad, Julia M. Yeomans
We use continuum simulations to study the impact of friction on the ordering of defects in an active nematic. Even in a frictionless system, +1/2 defects tend to align side-by-side…
Polar jets of swimming bacteria condensed by a patterned liquid crystal
Taras Turiv, Runa Koizumi, Kristian Thijssen +8
Active matter exhibits remarkable collective behavior in which flows, continuously generated by active particles, are intertwined with the orientational order of these particles. T…
Active nematics with anisotropic friction: the decisive role of the flow aligning parameter
Kristian Thijssen, Luuk Metselaar, Julia M. Yeomans +1
We use continuum simulations to study the impact of anisotropic hydrodynamic friction on the emergent flows of active nematics. We show that, depending on whether the active partic…