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Publication type: Article in scientific journal
Type of review: Peer review (publication)
Title: Investigating a lock-in thermal imaging setup for the detection and characterization of magnetic nanoparticles
Authors : Steinmetz, Lukas
Kirsch, Christoph
Geers, Christoph
Petri-Fink, Alke
Bonmarin, Mathias
et. al : No
DOI : 10.3390/nano10091665
Published in : Nanomaterials
Volume(Issue) : 10
Issue : 9
Issue Date: 2020
Publisher / Ed. Institution : MDPI
ISSN: 2079-4991
Language : English
Subjects : Measurement Instrument; Thermal Imaging; Magnetic Nanoparticles; Lock-in Thermal Imaging
Subject (DDC) : 620: Engineering
Abstract: Magnetic hyperthermia treatments utilize the heat generated by magnetic nanoparticles stimulated by an alternating magnetic field. Therefore, analytical methods are required to precisely characterize the dissipated thermal energy and to evaluate potential amplifying or diminishing factors in order to ensure optimal treatment conditions. Here, we present a lock-in thermal imaging setup specifically designed to thermally measure magnetic nanoparticles and we investigate theoretically how the various experimental parameters may influence the measurement. We compare two detection methods and highlight how an affordable microbolometer can achieve identical sensitivity with respect to a thermal camera-based system by adapting the measurement time. Furthermore, a numerical model is used to demonstrate the optimal stimulation frequency, the degree of nanomaterial heating power, preferential sample holder dimensions and the extent of heat losses to the environment. Using this model, we also revisit some technical assumptions and experimental results that previous studies have stated and suggest an optimal experimental configuration.
Fulltext version : Published version
License (according to publishing contract) : CC BY 4.0: Attribution 4.0 International
Departement: School of Engineering
Organisational Unit: Institute of Computational Physics (ICP)
Appears in Collections:Publikationen School of Engineering

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