Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5442761 | Optical Materials | 2017 | 6 Pages |
Abstract
CaF2 nanoparticles activated with Nd3+ ions have been investigated as potential optical nanothermometers in the biological windows. The variation of the Nd3+ emission around 850 and 1060 nm as a function of the temperature has been measured. A ratiometric approach, based on the relative changes in the intensities of different emission bands of the Nd3+ has been considered to investigate the thermometric properties of the NPs. The evaluated thermal sensitivity is around 0.12% Kâ1, a value that is similar to those found for other water dispersible nanothermometers based on the near-infrared luminescence of the Nd3+ lanthanide ion. The temperature uncertainty is around 1.8 °C, small enough to monitor the local temperature during a photothermal treatment.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
P. Cortelletti, C. Facciotti, I.X. Cantarelli, P. Canton, M. Quintanilla, F. Vetrone, A. Speghini, M. Pedroni,