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Issue 9, 2011
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Quantitative nanoscale viscosity measurements using magnetic nanoparticles and SQUID AC susceptibility measurements

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Abstract

The frequency dependent response of suspended thermally blocked magnetic nanoparticles in an oscillating magnetic field was used to quantitatively determine the nanoscale viscosity of a fluid at various temperatures. The nanoscale viscosity was found to be within 7% of the macroscale viscosity determined through rheology, except at low temperatures where crystallization occurs in the fluid. The range of viscosities accessible through this technique and criteria for selection of the magnetic nanoparticle material are discussed.

Graphical abstract: Quantitative nanoscale viscosity measurements using magnetic nanoparticles and SQUID AC susceptibility measurements

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Publication details

The article was received on 31 Aug 2010, accepted on 21 Feb 2011 and first published on 23 Mar 2011


Article type: Paper
DOI: 10.1039/C0SM00902D
Citation: Soft Matter, 2011,7, 4497-4503

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    Quantitative nanoscale viscosity measurements using magnetic nanoparticles and SQUID AC susceptibility measurements

    V. L. Calero-DdelC, D. I. Santiago-Quiñonez and C. Rinaldi, Soft Matter, 2011, 7, 4497
    DOI: 10.1039/C0SM00902D

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