ArticleProceedings of the National Academy of Sciences of the United States of America2021
Ferromagnetic liquid droplets with adjustable magnetic properties.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed.
- Controlled assembly and sophisticated additive manufacturing of macroscopic droplets.Proceedings of the National Academy of Sciences of the United States of America · 2026Article
- Natural nanoparticle complexes at water-water interfaces.Nature communications · 2025Article
- Permanent fluidic magnets for liquid bioelectronics.Nature materials · 2024Article
- Reversible morphology-resolved chemotactic actuation and motion of Janus emulsion droplets.Nature communications · 2022Article
- Adjustable object floating states based on three-segment three-phase contact line evolution.Proceedings of the National Academy of Sciences of the United States of America · 2022Article
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Authors and funding
9 authors.
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No grant is acknowledged in the PubMed record.
Abstract
The assembly and jamming of magnetic nanoparticles (NPs) at liquid-liquid interfaces is a versatile platform to endow structured liquid droplets with a magnetization, i.e., producing ferromagnetic liquid droplets (FMLDs). Here, we use hydrodynamics experiments to probe how the magnetization of FMLDs and their response to external stimuli can be tuned by chemical, structural, and magnetic means. The remanent magnetization stems from magnetic NPs jammed at the liquid-liquid interface and dispersed NPs magneto-statically coupled to the interface. FMLDs form even at low concentrations of magnetic NPs when mixing nonmagnetic and magnetic NPs, since the underlying magnetic dipole-driven clustering of magnetic NP-surfactants at the interface produces local magnetic properties, similar to those found with pure magnetic NP solutions. While the net magnetization is smaller, such a clustering of NPs may enable structured liquids with heterogeneous surfaces.
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Registered trials
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