LaF3 core/shell nanoparticles for subcutaneous heating and thermal sensing in the second biological-window Article Swipe

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Ytterbium Nanoparticle Photothermal therapy Materials science Neodymium Shell (structure) Thermal Optoelectronics Radiative transfer Laser Radiant heating Core (optical fiber) Infrared Excitation Nanotechnology Doping Optics Composite material Meteorology Engineering Physics Electrical engineering

Erving Ximendes , Uéslen Rocha , Upendra Kumar Kagola , Carlos Jacinto , Daniel Jaque ·

YOU? · · 2016 · Open Access · · DOI: https://doi.org/10.1063/1.4954170 · OA: W2462723342

We report on Ytterbium and Neodymium codoped LaF3 core/shell nanoparticles capable of simultaneous heating and thermal sensing under single beam infrared laser excitation. Efficient light-to-heat conversion is produced at the Neodymium highly doped shell due to non-radiative de-excitations. Thermal sensing is provided by the temperature dependent Nd3+ → Yb3+ energy transfer processes taking place at the core/shell interface. The potential application of these core/shell multifunctional nanoparticles for controlled photothermal subcutaneous treatments is also demonstrated.