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Shock waves in capillary collapse of colloids: A model system for two-dimensional screened Newtonian gravity

Opened Access Shock waves in capillary collapse of colloids: A model system for two-dimensional screened Newtonian gravity

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Autor: Bleibel, J.
Dietrich, Siegfried
Domínguez Álvarez, Álvaro
Oettel, M.
Departamento: Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear
Fecha: 2011-09-16
Publicado en: Physical review Letters, 107 (12), 128302-1-128302-4.
Tipo de documento: Artículo
Resumen: Using Brownian dynamics simulations, density functional theory, and analytical perturbation theory we study the collapse of a patch of interfacially trapped, micrometer-sized colloidal particles, driven by long-ranged capillary attraction. This attraction is formally analogous to two-dimensional (2D) screened Newtonian gravity with the capillary length ˆλ as the screening length. Whereas the limit ˆλ→∞ corresponds to the global collapse of a self-gravitating fluid, for finite ˆλ we predict theoretically and observe in simulations a ringlike density peak at the outer rim of a disclike patch, moving as an inbound shock wave. Possible experimental realizations are discussed.
Cita: Bleibel, J., Dietrich, S., Domínguez Álvarez, Á. y Oettel, M. (2011). Shock waves in capillary collapse of colloids: A model system for two-dimensional screened Newtonian gravity. Physical review Letters, 107 (12), 128302-1-128302-4.
Tamaño: 711.2Kb
Formato: PDF

URI: http://hdl.handle.net/11441/62599

DOI: 10.1103/PhysRevLett.107.128302

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