2D thermal map calculation and experimental study for optical heating of resonant non-plasmonic nanoparticles

Noble metal nanostructures are widely used in modern thermal applications due to their remarkable ability to effectively convert visible light or near-IR incident radiation into heat energy. However, the applicability of such plasmonic nanoobjects are limited by the absence of thermally dependent optical signals, that could provide direct single-step thermometry. Recently, novel optical heating concept with simultaneous local thermometry via Raman scattering, based on excitation of Mie-type resonances in non-plasmonic nanoparticles, such as silicon, was introduced. In this work, we demonstrate theoretical approach in calculation of 2D thermal profiles for single silicon nanoparticles on a glass substrate carried out via Raman thermometry.