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Spontaneous emulsification, resulting from the assembly and accumulation of surfactants at liquid–liquid interfaces, is an interfacial instability where microdroplets are generated and diffusively spread from the interface until complete emulsification. Here, it is shown that an external magnetic field can modulate the assembly of paramagnetic nanoparticle surfactants (NPSs) at liquid–liquid interfaces...
Magnetic Nanoparticle Surfactants
In article number 2213844, Thomas P. Russell, Dong Wang, Ahmad K. Omar, and co‐workers illustrate that external magnet (not shown) induces a moment (shown by arrows) in iron oxide nanoparticles dispersed in an aqueous droplet and an oversaturation of nanoparticles on the surface of the droplet. Removal of the magnetic field causes an explosive ejection of ferromagnetic...
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