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Dissipation-induced rotation of suspended ferromagnetic nanoparticles
T. V. Lyutyy, S. I. Denisov, P. Hänggi
We report the precessional rotation of magnetically isotropic ferromagnetic nanoparticles in a viscous liquid that are subjected to a rotating magnetic field. In contrast to magnet…
Hydrodynamic and entropic effects on colloidal diffusion in corrugated channels
Xiang Yang, Chang Liu, Yunyun Li +3
In the absence of advection, confined diffusion characterizes transport in many natural and artificial devices, such as ionic channels, zeolites, and nanopores. While extensive the…
Taxis of Artificial Swimmers in a Spatio-Temporally Modulated Activation Medium
Alexander Geiseler, Peter Hänggi, Fabio Marchesoni
Contrary to microbial taxis, where a tactic response to external stimuli is controlled by complex chemical pathways acting like sensor-actuator loops, taxis of artificial microswim…
Self-Polarizing Microswimmers in Active Density Waves
Alexander Geiseler, Peter Hänggi, Fabio Marchesoni
An artificial microswimmer drifts in response to spatio-temporal modulations of an activating suspension medium. We consider two competing mechanisms capable of influencing its tac…
Chemotaxis of artificial microswimmers in active density waves
Alexander Geiseler, Peter Hänggi, Fabio Marchesoni +2
Living microorganisms are capable of a tactic response to external stimuli by swimming towards or away from the stimulus source; they do so by adapting their tactic signal transduc…
Kramers escape of a self-propelled particle
Alexander Geiseler, Peter Hänggi, Gerhard Schmid
We investigate the escape rate of an overdamped, self-propelled spherical Brownian particle on a surface from a metastable potential well. Within a modeling in terms of a 1D consta…