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2013-04-11

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cc-by-nc-nd (c) Martinez-Boubeta, Carlos et al., 2013
Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/48703

Learning form Nature to improve the heat generation of iron-oxide nanoparticles for magnetic hyperthermia applications.

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Recurs relacionat

http://dx.doi.org/10.1038/srep01652

Resum

The performance of magnetic nanoparticles is intimately entwined with their structure, mean size and magnetic anisotropy. Besides, ensembles offer a unique way of engineering the magnetic response by modifying the strength of the dipolar interactions between particles. Here we report on an experimental and theoretical analysis of magnetic hyperthermia, a rapidly developing technique in medical research and oncology. Experimentally, we demonstrate that single-domain cubic iron oxide particles resembling bacterial magnetosomes have superior magnetic heating efficiency compared to spherical particles of similar sizes. Monte Carlo simulations at the atomic level corroborate the larger anisotropy of the cubic particles in comparison with the spherical ones, thus evidencing the beneficial role of surface anisotropy in the improved heating power. Moreover we establish a quantitative link between the particle assembling, the interactions and the heating properties. This knowledge opens new perspectives for improved hyperthermia, an alternative to conventional cancer therapies.

Matèries

Càncer, Nanotecnologia, Nanopartícules, Propietats magnètiques, Materials magnètics, Calor, Terapèutica

Matèries (anglès)

Cancer, Nanotechnology, Nanoparticles, Magnetic properties, Magnetic materials, Heat, Therapeutics

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Articles publicats en revistes (Física de la Matèria Condensada)

Citació

MARTÍNEZ BOUBETA, José Carlos, et al. Learning form Nature to improve the heat generation of iron-oxide nanoparticles for magnetic hyperthermia applications. Scientific Reports. 2013. Vol. 3, num. 1652, pags. 1652-1-1652-8. ISSN 2045-2322. [consulted: 8 of June of 2026]. Available at: https://hdl.handle.net/2445/48703

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