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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We gratefully acknowledge the financial support of ANR Surfanicol (ANR14-CE07-0039-01).
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Ben’MBarek, N., Aschi, A., Blanc, C. et al. Microspheres viscous drag at a deformed fluid interface: particle’s weight and electrical charges effects. Eur. Phys. J. E 44, 26 (2021). https://doi.org/10.1140/epje/s10189-021-00041-w
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DOI: https://doi.org/10.1140/epje/s10189-021-00041-w