Subtissue thermal sensing based on neodymium-doped LaF₃ nanoparticles

Martinez Maestro, L ORCID:, Rocha, U, Jacinto, C, Ferreira Silva, W, Guedes, I, Benayas, A, Acosta Elias, M, Bovero, E, van Veggel, FCJM, Garcia Sole, J and Jaque, D 2013, 'Subtissue thermal sensing based on neodymium-doped LaF₃ nanoparticles' , ACS Nano, 7 (2) , pp. 1188-1199.

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In this work, we report the multifunctional character of neodymium-doped LaF3 core/shell nanoparticles. Because of the spectral overlap of the neodymium emission bands with the transparency windows of human tissues, these nanoparticles emerge as relevant subtissue optical probes. For neodymium contents optimizing the luminescence brightness of Nd3+:LaF3 nanoparticles, subtissue penetration depths of several millimeters have been demonstrated. At the same time, it has been found that the infrared emission bands of Nd3+:LaF3 nanoparticles show a remarkable thermal sensitivity, so that they can be advantageously used as luminescent nanothermometers for subtissue thermal sensing. This possibility has been demonstrated in this work: Nd3+:LaF3 nanoparticles have been used to provide optical control over subtissue temperature in a single-beam plasmonic-mediated heating experiment. In this experiment, gold nanorods are used as nanoheaters while thermal reading is performed by the Nd3+:LaF3 nanoparticles. The possibility of a real single-beam-controlled subtissue hyperthermia process is, therefore, pointed out.

Item Type: Article
Schools: Schools > School of Computing, Science and Engineering
Journal or Publication Title: ACS Nano
Publisher: ACS Publications
ISSN: 1936-0851
Related URLs:
Funders: National Science and Engineering Council of Canada, Universidad Autónoma de Madrid, Comunidad de Madrid, Spanish Ministerio de Educacion y Ciencia, PRONEX/FAPEAL Brazil, FINEP Brazil, CNPq Brazil, CAPES Brazil, Le Fonds de recherche du Québec Nature et technologies (FRQNT)
Depositing User: L Martinez Maestro
Date Deposited: 10 Dec 2019 10:33
Last Modified: 27 Aug 2021 21:32

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