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Correlation between Plasmonic and Thermal Properties of Metallic Nanoparticles.

Inès AbidJavier González-ColsaChristophe NaveauxAndreea CampuCélia AribMonica FocsanPablo AlbellaMathieu EdelyMarc Lamy de la Chapelle
Published in: Nanomaterials (Basel, Switzerland) (2024)
Here, we investigate the correlation between the heat generated by gold nanoparticles, in particular nanospheres and nanobipyramids, and their plasmonic response manifested by the presence of Localized Surface Plasmon Resonances (LSPRs). Using a tunable laser and a thermal camera, we measure the temperature increase induced by colloidal nanoparticles in an aqueous solution as a function of the excitation wavelength in the optical regime. We demonstrate that the photothermal performances of the nanoparticles are strongly related not only to their plasmonic properties but also to the size and shape of the nanoparticles. The contribution of the longitudinal and transversal modes in gold nanobipyramids is also analyzed in terms of heat generation. These results will guide us to design appropriate nanoparticles to act as efficient heat nanosources.
Keyphrases
  • gold nanoparticles
  • energy transfer
  • heat stress
  • aqueous solution
  • single molecule
  • high resolution
  • walled carbon nanotubes
  • machine learning
  • quantum dots
  • deep learning
  • drug release
  • light emitting