Microspheres viscous drag at a deformed fluid interface: particle's weight and electrical charges effects
Nadia Ben'MBarek1, Adel Aschi1, Christophe Blanc2
1Faculté des Sciences de Tunis, Université de Tunis El Manar, LR99ES16 Laboratoire Physique de la Matière Molle et de la Modélisation Électromagnétique, 2092, Tunis, Tunisia.
Abstract:
When a microparticle is trapped at a fluid interface, particle's electrical charge and weight combine to deform the interface. Such deformation is expected to affect the particle diffusion via hydrodynamics boundary conditions. Using available models of particle-induced electrostatic deformation of the interface and particle dynamics at the interface, we are able to analytically predict particle diffusion coefficient values in a large range of particle's contact angle and size. This might offer a solid background of numerical values to compare with for future experimental studies in the field of particle diffusion at a fluid interface.
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