We postulate that the phase inversion is driven by an in situ switch of the particle wettability from metastable positions at the interface following the input of controlled mechanical energy. Here, we propose a mechanism that exploits particle surface roughness to induce metastable wetting and obtain mechanically-responsive Pickering emulsions. without any formulation change, remains an open fundamental challenge with many opportunities for industrial applications. The possibility to invert emulsions from oil-in-water to water-in-oil (or vice versa) in a closed system, i.e. E-mail: b Van’t Hoff Laboratory for Physical and Colloid Chemistry, Debye Institute for Nanomaterials Science, Utrecht University, Utrecht, The Netherlands c Department of Chemistry and Applied Biosciences, Institute for chemical and bioengineering, ETH Zürich, Zürich, Switzerland d Condensed Matter and Interfaces, Debye Institute for Nanomaterials Science, Utrecht University, Utrecht, The Netherlands e Process Engineering Department, Eawag, Swiss Federal Institute of Aquatic Science and Technology, Switzerland ![]() * a a Laboratory for Soft Materials and Interfaces, Department of Materials, ETH Zürich, Zürich, Switzerland. ![]() Soft Matter, 2019, 15, 7888-7900 Mechanical phase inversion of Pickering emulsions via metastable wetting of rough colloids †
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