52 citations · 159 across the 11 of their papers we have counts for
7 papers
Ice Rule Breakdown and frustrated antiferrotoroidicity in an artificial colloidal Cairo ice
Carolina Rodríguez-Gallo, Antonio Ortiz-Ambriz, Cristiano Nisoli +1
We combine experiments and numerical simulations to investigate the low energy states and the emergence of topological defects in an artificial colloidal ice in the Cairo geometry.…
Hydrodynamic interactions hinder transport of flow-driven colloidal particles
Dominik Lips, Eric Cereceda-López, Antonio Ortiz-Ambriz +3
The flow-driven transport of interacting micron-sized particles occurs in many soft matter systems spanning from the translocation of proteins to moving emulsions in microfluidic d…
Defect Dynamics in Artificial Colloidal Ice: Real-Time Observation, Manipulation and Logic Gate
Johannes Loehr, Antonio Ortiz-Ambriz, Pietro Tierno
We study the defect dynamics in a colloidal spin ice system realized by filling a square lattice of topographic double well islands with repulsively interacting magnetic colloids.…
Bidirectional particle transport and size selective sorting of Brownian particles in a flashing spatially periodic energy landscape
Fernando Martinez-Pedrero, Helena Massana-Cid, Till Ziegler +3
We demonstrate a size sensitive experimental scheme which enables bidirectional transport and fractionation of paramagnetic colloids in a fluid medium. It is shown that two types o…
Formation of metastable phases by spinodal decomposition
Ricard Alert, Pietro Tierno, Jaume Casademunt
Metastable phases may be spontaneously formed from other metastable phases through nucleation. Here we demonstrate the spontaneous formation of a metastable phase from an unstable…
Geometric Frustration of Colloidal Dimers on a Honeycomb Magnetic Lattice
Pietro Tierno
We study the phase behaviour and the collective dynamics of interacting paramagnetic colloids assembled above a honeycomb lattice of triangular shaped magnetic minima. A frustrated…