Lock-in thermography as an analytical tool for magnetic nanoparticles: measuring heating power and magnetic fields

Monnier, Christophe A.; Crippa, Federica; Geers, Christoph; Knapp, Evelyne; Rothen-Rutishauser, Barbara; Bonmarin, Mathias; Lattuada, Marco; Petri-Fink, Alke

doi:10.1021/acs.jpcc.7b09094

Back

Journal article

+ 1 other files

Lock-in thermography as an analytical tool for magnetic nanoparticles: measuring heating power and magnetic fields

Monnier, Christophe A. Adolphe Merkle Institute, University of Fribourg, Switzerland
Crippa, Federica Adolphe Merkle Institute, University of Fribourg, Switzerland
Geers, Christoph Adolphe Merkle Institute, University of Fribourg, Switzerland
Knapp, Evelyne Institute of Computational Physics, Zurich University of Applied Sciences, Winterthur, Switzerland
Rothen-Rutishauser, Barbara Adolphe Merkle Institute, University of Fribourg, Switzerland
Bonmarin, Mathias Institute of Computational Physics, Zurich University of Applied Sciences, Winterthur, Switzerland
Lattuada, Marco Chemistry Department, University of Fribourg, Switzerland
Petri-Fink, Alke Adolphe Merkle Institute, University of Fribourg, Switzerland

07.12.2017

Published in:

The Journal of Physical Chemistry C. - 2017, vol. 121, no. 48, p. 27164–27175

English Magnetic nanoparticles and their ability to convert electromagnetic energy into heat are of explicit interest for various applications. However, precise quantification of their heating efficiency is not always upfront, and several parameters render comparative studies challenging. This paper describes the theory behind lock-in thermography, a new technique for quantifying the heating properties of magnetic nanoparticles. This technique allows the investigation of some of the potential sources of variability: key factors such as magnetic field inhomogeneity and its effects on the heating power are explored in detail. The presented results, obtained from various nanoparticle batches of different origins, highlight the importance of pursuing a standardized and systematic approach when quantifying the heating efficiency of magnetic nanoparticles.

Faculty

Faculté des sciences et de médecine

Department

Département de Chimie

Language