13 papers
Beyond the Markovian limit: Exact solutions for active motion in a power-law viscoelastic bath
Mintu Karmakar, Jure Dobnikar, Ignacio Pagonabarraga
Active particles from bacteria to synthetic microswimmers often navigate viscoelastic media with complex relaxation dynamics. The classical active Brownian model that assumes insta…
Universal transport of active colloids with sensory delay in motility landscapes
Adrià Garcés, Ueli Töpfer, Lucio Isa +2
We experimentally, numerically and analytically explore the diffusive transport of active colloidal particles with sensory delay, navigating motility landscapes in which the self-p…
Dynamics of O(2) excitations in a non-reciprocal medium
Ylann Rouzaire, Daniel JG Pearce, Ignacio Pagonabarraga +1
We investigate emergent dynamics due to non-reciprocity in the model. The lattice XY model, where non-reciprocity stems from vision cone like couplings, can be des…
Is the active suspension in a complex viscoelastic fluid more chaotic or more ordered?
Yuan Zhou, Qingzhi Zou, Ignacio Pagonabarraga +2
The habitat of microorganisms is typically complex and viscoelastic. A natural question arises: Do polymers in a suspension of active swimmers enhance chaotic motion or promote ori…
Protocol to evaluate the viscoelastic response of a polymer suspension to an active agent via oscillatory shear rheometry
Kai Qi, Qingzhi Zou, Ignacio Pagonabarraga
Microorganisms inhabit viscoelastic environments, where their locomotion can deform polymers and trigger local complex viscoelastic responses. However, a systematic approach to qua…
Hydrodynamic Mechanism of Colloidal Propulsion through Momentum Exchange
Javier Diaz, Ignacio Pagonabarraga, Carles Calero
Propulsion of colloidal particles due to momentum transfer from localized surface reactions is investigated by solving the exact unsteady Stokes equation. We model the effect of su…