AI Article Synopsis
- Magnetorheological (MR) fluids are useful in various applications but struggle with long-term stability due to particle settling.
- Researchers developed bio-inspired FeO@C nanospheres using a straightforward hydrothermal and calcination method to improve this issue.
- The new MR fluid formulation shows better stability and lower viscosity when the particles are highly concentrated, outperforming the traditional bare FeO nanoparticle suspension.
Article Abstract
Magnetorheological (MR) fluids have been successfully utilized in versatile fields but are still limited by their relatively inferior long-term dispersion stability. Herein, bio-inspired passion fruit-like FeO@C nanospheres were fabricated via a simple hydrothermal and calcination approach to tackle the settling challenge. The unique structures provide sufficient active interfaces for the penetration of carrier mediums, leading to preferable wettability between particles and medium oils. Compared with the bare FeO nanoparticle suspension, the resulting FeO@C nanosphere-based MR fluid exhibits desirable stability and relatively low field-off viscosity even at a high particle concentration up to 35 vol %.
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| http://dx.doi.org/10.1021/acs.langmuir.0c00301 | DOI Listing |
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