Abstract
We developed an all-optical method to measure the temperature on gold (nanorods and nanostars) and magnetite nanoparticles under near-infrared and radiofrequency excitation by monitoring the excited state lifetime of Rhodamine B that lies within ≅20 nm from the nanoparticle surface. We reached high temperature sensitivity (0.029 ± 0.001 ns/ C) and low uncertainty (±0.3 C). Gold nanostars are ≅3 and ≅100 times more efficient than gold nanorods and magnetite nanoparticles in inducing localized hyperthermia.
Original language | English |
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Pages (from-to) | 2004-2010 |
Number of pages | 7 |
Journal | Nano Letters |
Volume | 13 |
Issue number | 5 |
DOIs | |
Publication status | Published - May 8 2013 |
Keywords
- Fluorescence
- gold nanoparticles
- hyperthermia
- near-infrared
- thermology
ASJC Scopus subject areas
- Condensed Matter Physics
- Bioengineering
- Chemistry(all)
- Materials Science(all)
- Mechanical Engineering
- Medicine(all)