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. 2017 May 11;7(5):111. doi: 10.3390/nano7050111

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© 2017 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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Photothermal conversion capacity of Fe₃O₄@Au NPs. (a) Temperature increase at different concentrations of Fe₃O₄@Au NPs after different irradiation times; (b) HeLa cell viability after incubation with Fe₃O₄@Au NPs for 0, 1, 3, and 5 min NIR irradiation. *, # p < 0.05 versus control group, & p < 0.05 versus non-magnetic group.