In this presentation I will revise briefly some scenarios of dynamic
self-organization in soft matter-like systems. Essentially I will refer
to air/water (Langmuir) monolayers, colloids and mixed systems of the
two previous materials with liquid crystals. On what respects to
Langmuir monolayers I will report on a recent experimental demonstration
of selection of chiral symmetry at the level of molecular assemblies at
the microscale under controlled shearing. The propagation of such
orientational patterns into a liquid crystal matrix will be also
discussed, emphasizing the role of escaped defects. On what refers to
colloids, I will concentrate on the behavior of actuated paramagnetic
colloids, either driven on structured magnetic substrates or forced to
precess close to a bounding support. In the first situation I will
analyze a situation of giant diffusivity in ratchetted particles, while
emphasis will be given to directed and controlled transport in the
second case. Finally I will mention the discovered possibility to break
the orientation degeneration of liquid crystal cells by using dispersed
anisometric paramagnetic colloids.
Coffee and cookies will be served 15 minutes before the start of the seminar
Detalles de contacto:
Ernesto M. Nicola Contact form