Abstract
Francesc Sagues has shown an impressive series of experimental results obtained on a two dimensional active system formed by microtubules and kinesin molecular motors. These systems, introduced by Zvonimir Dogic, constitute a very well-controlled and fairly ideal model of an active two-dimensional nematic on which he was able to study effects predicted by theory, but also totally new geometries such as confinement effects or interaction with a smectic liquid crystal that imposes a very particular external field.
