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Pattern Formation in Catalytic Colloidal Microswimmers

Objetivo

Self-propelled particles such as bacteria, or 'Janus colloids' partially coated with catalyst, consume energy from their environment and convert it into systematic motion. Interacting ensembles of these particles compose so-called active matter which is intrinsically driven out of thermodynamic equilibrium. This allows for a rich and unusual phenomenology that includes condensation and phase separation in systems with purely repulsive interactions; giant density fluctuations; and various types of self-organized structure formation whose origin lies beyond the equilibrium principle of entropy maximization (free energy minimization). In PFCCMS we propose a novel theoretical study of activity-induced pattern formation with active colloids, addressing the interplay of an anisotropic production of chemicals at the colloidal surfaces and a chemotactic coupling of the particles to the resulting chemical gradients. Careful inclusion of noise within our coarse grained descriptions will enrich the emerging self-organized spatiotemporal structures with phenomena based on nucleation and topological defects. Our findings are expected to inform design principles for activity-induced self-organization of soft materials; we also plan to link them with the physics of gene-surfing and the spatiotemporal organization of bacterial colonies.

Ámbito científico (EuroSciVoc)

Programa(s)

Tema(s)

Régimen de financiación

MSCA-IF-EF-ST - Standard EF

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Convocatoria de propuestas

(se abrirá en una nueva ventana) H2020-MSCA-IF-2014

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Coordinador

THE UNIVERSITY OF EDINBURGH
Aportación neta de la UEn
€ 183 454,80
Dirección
OLD COLLEGE, SOUTH BRIDGE
EH8 9YL Edinburgh
Reino Unido
Región
Scotland Eastern Scotland Edinburgh
Tipo de actividad
Higher or Secondary Education Establishments
Enlaces
Coste total
€ 183 454,80