Arrangement at the nanoscale: Effect on magnetic particle hyperthermia

In this work, we present the arrangement of Fe3O4 magnetic nanoparticles into 3D linear chains and its effect on magnetic particle hyperthermia efficiency. The alignment has been performed under a 40 mT magnetic field in an agarose gel matrix. Two different sizes of magnetite nanoparticles, 10 and 4...

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Main Authors:	Myrovali, E., Maniotis, N., Makridis, A., Terzopoulou, A., Ntomprougkidis, V., Simeonidis, K., Sakellari, D., Kalogirou, O., Samaras, T., Salikhov, R., Spasova, M., Farle, M., Wiedwald, U., Angelakeris, M.
Format:	Online
Language:	English
Published:	Nature Publishing Group 2016
Online Access:	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5126575/

id	pubmed-5126575
recordtype	oai_dc
spelling	pubmed-51265752016-12-08 Arrangement at the nanoscale: Effect on magnetic particle hyperthermia Myrovali, E. Maniotis, N. Makridis, A. Terzopoulou, A. Ntomprougkidis, V. Simeonidis, K. Sakellari, D. Kalogirou, O. Samaras, T. Salikhov, R. Spasova, M. Farle, M. Wiedwald, U. Angelakeris, M. Article In this work, we present the arrangement of Fe3O4 magnetic nanoparticles into 3D linear chains and its effect on magnetic particle hyperthermia efficiency. The alignment has been performed under a 40 mT magnetic field in an agarose gel matrix. Two different sizes of magnetite nanoparticles, 10 and 40 nm, have been examined, exhibiting room temperature superparamagnetic and ferromagnetic behavior, in terms of DC magnetic field, respectively. The chain formation is experimentally visualized by scanning electron microscopy images. A molecular Dynamics anisotropic diffusion model that outlines the role of intrinsic particle properties and inter-particle distances on dipolar interactions has been used to simulate the chain formation process. The anisotropic character of the aligned samples is also reflected to ferromagnetic resonance and static magnetometry measurements. Compared to the non-aligned samples, magnetically aligned ones present enhanced heating efficiency increasing specific loss power value by a factor of two. Dipolar interactions are responsible for the chain formation of controllable density and thickness inducing shape anisotropy, which in turn enhances magnetic particle hyperthermia efficiency. Nature Publishing Group 2016-11-29 /pmc/articles/PMC5126575/ /pubmed/27897195 http://dx.doi.org/10.1038/srep37934 Text en Copyright © 2016, The Author(s) http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
repository_type	Open Access Journal
institution_category	Foreign Institution
institution	US National Center for Biotechnology Information
building	NCBI PubMed
collection	Online Access
language	English
format	Online
author	Myrovali, E. Maniotis, N. Makridis, A. Terzopoulou, A. Ntomprougkidis, V. Simeonidis, K. Sakellari, D. Kalogirou, O. Samaras, T. Salikhov, R. Spasova, M. Farle, M. Wiedwald, U. Angelakeris, M.
spellingShingle	Myrovali, E. Maniotis, N. Makridis, A. Terzopoulou, A. Ntomprougkidis, V. Simeonidis, K. Sakellari, D. Kalogirou, O. Samaras, T. Salikhov, R. Spasova, M. Farle, M. Wiedwald, U. Angelakeris, M. Arrangement at the nanoscale: Effect on magnetic particle hyperthermia
author_facet	Myrovali, E. Maniotis, N. Makridis, A. Terzopoulou, A. Ntomprougkidis, V. Simeonidis, K. Sakellari, D. Kalogirou, O. Samaras, T. Salikhov, R. Spasova, M. Farle, M. Wiedwald, U. Angelakeris, M.
author_sort	Myrovali, E.
title	Arrangement at the nanoscale: Effect on magnetic particle hyperthermia
title_short	Arrangement at the nanoscale: Effect on magnetic particle hyperthermia
title_full	Arrangement at the nanoscale: Effect on magnetic particle hyperthermia
title_fullStr	Arrangement at the nanoscale: Effect on magnetic particle hyperthermia
title_full_unstemmed	Arrangement at the nanoscale: Effect on magnetic particle hyperthermia
title_sort	arrangement at the nanoscale: effect on magnetic particle hyperthermia
description	In this work, we present the arrangement of Fe3O4 magnetic nanoparticles into 3D linear chains and its effect on magnetic particle hyperthermia efficiency. The alignment has been performed under a 40 mT magnetic field in an agarose gel matrix. Two different sizes of magnetite nanoparticles, 10 and 40 nm, have been examined, exhibiting room temperature superparamagnetic and ferromagnetic behavior, in terms of DC magnetic field, respectively. The chain formation is experimentally visualized by scanning electron microscopy images. A molecular Dynamics anisotropic diffusion model that outlines the role of intrinsic particle properties and inter-particle distances on dipolar interactions has been used to simulate the chain formation process. The anisotropic character of the aligned samples is also reflected to ferromagnetic resonance and static magnetometry measurements. Compared to the non-aligned samples, magnetically aligned ones present enhanced heating efficiency increasing specific loss power value by a factor of two. Dipolar interactions are responsible for the chain formation of controllable density and thickness inducing shape anisotropy, which in turn enhances magnetic particle hyperthermia efficiency.
publisher	Nature Publishing Group
publishDate	2016
url	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5126575/
_version_	1613744387884318720

Arrangement at the nanoscale: Effect on magnetic particle hyperthermia

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