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18 June 2024 Hybrid silicon-gold nanoparticles for optical heating and simultaneous temperature monitoring in cells
Elena Gerasimova, Egor Uvarov, Vitaly Yaroshenko, Lev Logunov, Sergey Makarov, Mikhail Zyuzin
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Proceedings Volume 13010, Tissue Optics and Photonics III; 130100A (2024) https://doi.org/10.1117/12.3016897
Event: SPIE Photonics Europe, 2024, Strasbourg, France
Abstract
Optically induced hyperthermia is an actively developing approach to treating cancer. All-dielectric nanoparticles have established themselves in different biomedical applications, including optical heating and nanothermometry. However, this type of nanoparticles (NPs) do not provide sufficient heating due to the necessity for a narrow size distribution. Thus, size-separation is required. Other method of negating disadvantages of all-dielectric NPs is incorporating plasmonic nanoparticles to create hybrid nanostructure, which would be less sensitive to size distribution, making it great nanoheater and nanothermometer. In this work, we propose a simple way of fabricating hybrid silicon-gold (Si-Au) NPs. We compare hybrid nanoparticles with pristine monodisperse Si NPs. In addition, we perform optical heating and simultaneous nanothermometry inside and outside living B16-F10 melanoma cells. Results reveal, that the hybrid NPs are more efficient in biological environments, since inhomogeneous medium can make it difficult to fulfill the critical coupling conditions.
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(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.
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Elena Gerasimova, Egor Uvarov, Vitaly Yaroshenko, Lev Logunov, Sergey Makarov, and Mikhail Zyuzin "Hybrid silicon-gold nanoparticles for optical heating and simultaneous temperature monitoring in cells", Proc. SPIE 13010, Tissue Optics and Photonics III, 130100A (18 June 2024); https://doi.org/10.1117/12.3016897
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KEYWORDS
Nanoparticles
Silicon
Laser ablation
Raman spectroscopy
Temperature metrology
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