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Complex Fluids: The Physics of Emulsions

2012/09/11 by M. E. Cates, Cates, M. E. · 1 citation
Engineering · Materials Science · Physics and Astronomy · #Enhanced Oil Recovery Techniques #FOS: Physical sciences #Materials Science (cond-mat.mtrl-sci) #Pickering emulsions and particle stabilization #Soft Condensed Matter (cond-mat.soft) #cond-mat.mtrl-sci #cond-mat.soft

paper · pdf · doi:10.48550/arxiv.1209.2290

Lecture notes for les Houches 2012 Summer School on Soft Interfaces

arxiv created 2012/09/11 · openalex publication_date 2012/09/11 · arxiv updated 2012/09/12 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

These lectures start with the mean field theory for a symmetric binary fluid mixture, addressing interfacial tension, the stress tensor, and the equations of motion (Model H). We then consider the phase separation kinetics of such a mixture: coalescence, Ostwald ripening, its prevention by trapped species, coarsening of bicontinuous states, and the role of shear flow. The third topic addressed is the stabilization of emulsions by using surfactants to reduce or even eliminate the interfacial tension between phases; the physics of bending energy, which becomes relevant in the latter case, is then presented briefly. The final topic is the creation of long-lived metastable emulsions by adsorption of colloidal particles or nano-particles at the fluid-fluid interface; alongside spherical droplets, these methods can be used to create a range of unconventional structures with potentially interesting properties that are only now being explored.

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