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Issue 15, 2010
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Monitoring gelation using magnetic nanoparticles

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The temperature dependent response of magnetic nanoparticles in oscillating magnetic fields was used to monitor gelation of the surrounding fluid at the size scale of the nanoparticles. The dynamic susceptibility of PEG-coated cobalt ferrite nanoparticles suspended in an aqueous gelatin solution had sharp transitions which correlated with gelation and melting observed using macroscale rheological measurements. The reported method requires small sample volumes and provides information on network formation at the scale of the probe nanoparticles.

Graphical abstract: Monitoring gelation using magnetic nanoparticles

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The article was received on 17 Feb 2010, accepted on 17 May 2010 and first published on 14 Jun 2010

Article type: Paper
DOI: 10.1039/C003284K
Citation: Soft Matter, 2010,6, 3662-3668

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    Monitoring gelation using magnetic nanoparticles

    C. Barrera, V. Florián-Algarin, A. Acevedo and C. Rinaldi, Soft Matter, 2010, 6, 3662
    DOI: 10.1039/C003284K

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