Zobrazeno 1 - 10
of 353
pro vyhledávání: '"Tierno, Pietro"'
Magnetic nano/microrotors are passive elements that spin around an axis due to an external rotating field while remaining confined to a close plane. They have been used to date in different applications related to fluid mixing, drug delivery or biome
Externí odkaz:
http://arxiv.org/abs/2407.11640
Autor:
Antonov, Alexander P., Terkel, Matthew, Schwarzendahl, Fabian Jan, Rodríguez-Gallo, Carolina, Tierno, Pietro, Löwen, Hartmut
Microscopic particles flowing through narrow channels may accumulate near bifurcation points provoking flow reduction, clogging and ultimately chip breakage. Here we show that the full flow behavior of colloidal particles through a microfluidic Y-jun
Externí odkaz:
http://arxiv.org/abs/2406.00883
Autor:
Wei, Xuefeng, Junot, Gaspard, Golestanian, Ramin, Zhou, Xin, Wang, Yanting, Tierno, Pietro, Meng, Fanlong
Magnetic gels with embedded micro/nano-sized magnetic particles in crosslinked polymer networks can be actuated by external magnetic fields, with changes in their internal microscopic structures and macroscopic mechanical properties. We investigate t
Externí odkaz:
http://arxiv.org/abs/2403.13481
Driven or self-propelling particles moving in viscoelastic fluids recently emerge as novel class of active systems showing a complex yet rich set of phenomena due to the non-Newtonian nature of the dispersing medium. Here we investigate the one-dimen
Externí odkaz:
http://arxiv.org/abs/2402.02939
Publikováno v:
Physical Review Letters, 2023, 131, 068301
We report the emergence of large zigzag bands in a population of reversibly actuated magnetic rotors that behave as active shakers, namely squirmers that shake the fluid around them without moving. The shakers collectively organize into dynamic struc
Externí odkaz:
http://arxiv.org/abs/2402.00493
Autor:
Cereceda-Lóopez, Eric, Ostinato, Mattia, Ortiz-Ambriz, Antonio, Straube, Arthur V., Palassini, Matteo, Tierno, Pietro
In our combined experimental, theoretical and numerical work, we study the out of equilibrium deformations in a shrinking ring of optically trapped, interacting colloidal particles. Steerable optical tweezers are used to confine dielectric microparti
Externí odkaz:
http://arxiv.org/abs/2312.14047
Active particles driven by a chemical reaction are the subject of intense research to date due to their rich physics, being intrinsically far from equilibrium, and their multiple technological applications. Recent attention in the field is now shifti
Externí odkaz:
http://arxiv.org/abs/2309.11084
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. This type of geometry is characterized by a mixed coordination ($z$),
Externí odkaz:
http://arxiv.org/abs/2305.09769
Autor:
Lips, Dominik, Cereceda-López, Eric, Ortiz-Ambriz, Antonio, Tierno, Pietro, Ryabov, Artem, Maass, Philipp
Publikováno v:
Soft Matter, 2022
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 devices. Here we combine experiments and theory to investigate the coll
Externí odkaz:
http://arxiv.org/abs/2208.10798
Autor:
Cereceda-López, Eric, Lips, Dominik, Ortiz-Ambriz, Antonio, Ryabov, Artem, Maass, Philipp, Tierno, Pietro
Publikováno v:
Phys. Rev. Lett. 127, 214501 (2021)
Hydrodynamic interactions between fluid-dispersed particles are ubiquitous in soft matter and biological systems and they give rise to intriguing collective phenomena. While it was reported that these interactions can facilitate force-driven particle
Externí odkaz:
http://arxiv.org/abs/2110.05097