Journal
MICROFLUIDICS AND NANOFLUIDICS
Volume 25, Issue 12, Pages -Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s10404-021-02498-9
Keywords
Magnetic microcapsules; Microfluidics; Ferrofluids; Encapsulation
Funding
- Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior-Brasil (CAPES) [001]
- Shell Brasil under the ANP RD levy
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Magnetized microcapsules produced by microfluidics are studied for their response to external magnetic fields, with the response found to be dependent on the concentration of the ferrofluid, capsule diameter, and shell thickness.
Gellan gum (water-based) and PDMS (oil-based) microcapsules are magnetized by the addition of biocompatible ferrofluids to their inner phase or shell. This enlarges the possibilities of using these microcapsules in different applications that require non-intrusive manipulation by external magnetic fields or detection by magnetic sensors. Microcapsules are all produced by microfluidics. The response of magnetized microcapsules to external magnetic fields is studied by flowing them in a tube exposed to a permanent magnetic field at constant flow rates. The response is a function of the concentration of the ferrofluid, capsule diameter, and shell thickness.
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