Time dependence of advection-diffusion coupling for nanoparticle ensembles
Alexandre Vilquin, Vincent Bertin, Pierre Soulard, Gabriel Guyard, Elie Raphaël, Frédéric Restagno, Thomas Salez, Joshua D. McGraw
Abstract
Advection-diffusion coupling is known to enhance particle dispersion, the latter being important whenever the concentration of objects downstream of a release point should be known. Whereas the classical Taylor model predicts the long-time limit of this dispersion in a closed space, our nanoscale-resolved measurements address the question of dispersion dynamics in the first instants after release. Our measurements also reveal the corresponding crossover towards the long-time limit, and are in quantitative agreement with theory.
Topics & Concepts
Coupling (piping)Dispersion (optics)CrossoverLimit (mathematics)Particle (ecology)Statistical physicsPhysicsDynamics (music)Materials scienceNanoparticlePoint (geometry)Dispersion relationCondensed matter physicsTaylor dispersionMolecular physicsChemistryParticle dynamicsWork (physics)ThermodynamicsChemical physicsChemical and Physical Properties of MaterialsAdvanced Physical and Chemical Molecular InteractionsMaterial Dynamics and Properties