RT Journal Article
T1 Magnetic colloidal currents guided on self‐assembled colloidal tracks
A1 Martín Roca, José
A1 Ortega Gómez, Francisco
A1 Valeriani, Chantal
A1 González Rubio, Ramón
A1 Martínez Pedrero, Fernando
AB The nondiffusive directional transport of micro-cargos, such as colloids, cells, or liposomes, is vital for living organisms, for example in the intracellular transport of cytoplasmic organelles along actin filaments or microtubules, and also in numerous applications in biomedicine and nanotechnology. Mimicking natural designs, the self-assembly capacity of magnetic colloids is studied and exploited to construct different paths along which swarms of magnetic micro/nanoparticles can be guided. Driven transport is possible thanks to the combined effect of the magnetic microstructure of the self-assembled tracks, adsorbed on a solid interface, and the application of a time-dependent magnetic field. Nonadsorbed magnetic particles propel along the pre-formed structures under the action of an externally controllable traveling potential ratchet, like molecular walkers. The transport mechanisms are determined by both the properties of the particles and the configuration of the applied field. Finally, it is shown how the proposed combination of self-assembly and guided transport paves the way to the development of a new class of techniques, able to adapt ad hoc to the environment, and transport of microparticles along irregular profiles and/or crowded conditions. The technological interest is immediate, including drug delivery and controlled guidance of microcargos, in biological environments and microfluidic platforms.
PB Willey
SN 1616-301X
SN 1616-3028
YR 2023
FD 2023-09-03
LK https://hdl.handle.net/20.500.14352/105114
UL https://hdl.handle.net/20.500.14352/105114
LA eng
NO Martín-Roca, J., Ortega, F., Valeriani, C., Rubio, R.G. and Martínez-Pedrero, F. (2023), Magnetic Colloidal Currents Guided on Self-Assembled Colloidal Tracks. Adv. Funct. Mater., 33: 2306541. https://doi.org/10.1002/adfm.202306541
DS Docta Complutense
RD 21 abr 2025