Nano‐Localized Heating Source for Photonics and Plasmonics

Nanomaterials offer unique properties that bridge classic to quantum behavior of matter. Plasmonic metallic nanoparticles (NPs) are a particular class of nanomaterials which possess the capability to localize light down to the nanoscale: visible electromagnetic radiation induces an oscillation of the free electrons localized at the metal (NPs)/dielectric (surrounding medium) interface. This phenomenon, called localized plasmon resonance (LPR), can be controlled in frequency by varying both the size and the shape of the nanoparticles and the dielectric constant of the surrounding medium. [ 1 ] Due to the electronelectron scattering and the electron-phonon coupling associated with the LPR effect, the strong electric fi eld generated around the NPs is converted into heat and the NPs behave as nanosources of heat. [ 2,3 ] In the last ten years, this resonant effect has enabled a remarkable breakthrough in fi cancer through

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