297 citations · 645 across the 9 of their papers we have counts for
9 papers
Autonomously Probing Viscoelasticity in Disordered Suspensions
Clara Abaurrea-Velasco, Celia Lozano, Clemens Bechinger +1
Recent experiments show a strong rotational-diffusion enhancement for self-propelled microrheological probes in colloidal glasses. Here, we provide microscopic understanding using…
Propagating Density Spikes in Light-Powered Motility-Ratchets
Celia Lozano, Benno Liebchen, Borge ten Hagen +2
Combining experiments and computer simulations, we use a spatially periodic and flashing light-field to direct the motion of phototactic active colloids. Here, the colloids self-or…
Colloidal Brazil nut effect in microswimmer mixtures induced by motility contrast
Soudeh Jahanshahi, Celia Lozano, Borge ten Hagen +2
We numerically and experimentally study the segregation dynamics in a binary mixture of microswimmers which move on a two-dimensional substrate in a static periodic triangular-like…
Run-and-Tumble-Like Motion of Active Colloids in Viscoelastic Media
Celia Lozano, Juan Ruben Gomez-Solano, Clemens Bechinger
Run-and-tumble (RNT) motion is a prominent locomotion strategy employed by many living microorganisms. It is characterized by straight swimming intervals (runs), which are interrup…
Tuning the motility and directionality of self-propelled colloids
Juan Ruben Gomez-Solano, Sela Samin, Celia Lozano +3
Microorganisms are able to overcome the thermal randomness of their surroundings by harvesting energy to navigate in viscous fluid environments. In a similar manner, synthetic coll…
Phototaxis of synthetic microswimmers in optical landscapes
Celia Lozano, Borge ten Hagen, Hartmut Löwen +1
Many microorganisms, with phytoplankton and zooplankton as prominent examples, display phototactic behaviour, that is, the ability to perform directed motion within a light gradien…
Simulation of counter flow pedestrian dynamics in hallways using spheropolygons
Fernando Alonso-Marroquin, Celia Lozano, Alvaro Ramirez-Gomez +1
We developed a method for simulating pedestrian dynamics in a large, dense crowd. Our numerical model calculates pedestrian motion from Newton second laws, taking into account visc…
Flow and clogging in a silo with an obstacle above the orifice
Celia Lozano, Alvaro Janda, Angel Garcimartin +2
In a recent paper [Zuriguel et al., Phys. Rev. Lett. 107, 278001 (2011)] it has been shown that the presence of an obstacle above the outlet can significatively reduce the clogging…
Breaking arches with vibrations: the role of defects
Celia Lozano, Geoffroy Lumay, Iker Zuriguel +1
We present experimental results about the stability of arches against external vibrations. Two dimensional strings of mutually stabilizing grains are geometrically analyzed and sub…