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Issue 27, 2016
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A lock-in-based method to examine the thermal signatures of magnetic nanoparticles in the liquid, solid and aggregated states

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Abstract

We propose a new methodology based on lock-in thermography to study and quantify the heating power of magnetic nanoparticles. Superparamagnetic iron oxide nanoparticles exposed to a modulated alternating magnetic field were used as model materials to demonstrate the potency of the system. Both quantitative and qualitative information on their respective heating power was extracted at high thermal resolutions under increasingly complex conditions, including nanoparticles in the liquid, solid and aggregated states. Compared to conventional techniques, this approach offers a fast, sensitive and non-intrusive alternative to investigate multiple and dilute specimens simultaneously, which is essential for optimizing and accelerating screening procedures and comparative studies.

Graphical abstract: A lock-in-based method to examine the thermal signatures of magnetic nanoparticles in the liquid, solid and aggregated states

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Supplementary files

Article information


Submitted
11 Mar 2016
Accepted
10 Jun 2016
First published
13 Jun 2016

Nanoscale, 2016,8, 13321-13332
Article type
Paper

A lock-in-based method to examine the thermal signatures of magnetic nanoparticles in the liquid, solid and aggregated states

C. A. Monnier, M. Lattuada, D. Burnand, F. Crippa, J. C. Martinez-Garcia, A. M. Hirt, B. Rothen-Rutishauser, M. Bonmarin and A. Petri-Fink, Nanoscale, 2016, 8, 13321
DOI: 10.1039/C6NR02066F

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