title: Optical heating and temperature determination of core-shell gold nanoparticles and single-walled carbon nanotube microparticles.
abstract: The real-time temperature measurement of nanostructured materials is particularly attractive in view of increasing needs of local temperature probing with high sensitivity and resolution in nanoelectronics, integrated photonics, and biomedicine. Light-induced heating and Raman scattering of single-walled carbon nanotubes with adsorbed gold nanoparticles decorating silica microparticles are reported, by both green and near IR lasers. The plasmonic shell is used as nanoheater, while the single-walled carbon nanotubes are Raman active and serve as a thermometer. Stokes and Anti-Stokes Raman spectra of single-walled carbon nanotubes serve to estimate the effective light-induced temperature rise on the metal nanoparticles. The temperature rise is constant with time, indicating stability of the adsorption density. The effective temperatures derived from Stokes and Anti-Stokes intensities are correlated with those measured in a heating stage. The resolution of the thermal experiments in our study was found to be 5-40 K.
authors.affiliation: Max Planck Institute of Colloids and Interfaces, Department of Interfaces, 14424, Potsdam, Germany; Saratov State University, Faculty of Nano- and Biomedical Technologies, Saratov, 410012, Russia.
authors.forename: Alexey
authors.initials: A
authors.lastname: Yashchenok
authors.forename: Admir
authors.initials: A
authors.lastname: Masic
authors.forename: Dmitry
authors.initials: D
authors.lastname: Gorin
authors.forename: Olga
authors.initials: O
authors.lastname: Inozemtseva
authors.forename: Bong Sup
authors.initials: BS
authors.lastname: Shim
authors.forename: Nicholas
authors.initials: N
authors.lastname: Kotov
authors.forename: Andre
authors.initials: A
authors.lastname: Skirtach
authors.forename: Helmuth
authors.initials: H
authors.lastname: Möhwald
mesh_terms: D006046:Gold / Q000737:chemistry* / Q000528:radiation effects; D008027:Light; D008422:Materials Testing / Q000379:methods*; D053768:Metal Nanoparticles / Q000737:chemistry* / Q000528:radiation effects; D037742:Nanotubes, Carbon / Q000737:chemistry* / Q000528:radiation effects; D013059:Spectrum Analysis, Raman / Q000379:methods*; D013817:Thermography / Q000379:methods*
chemical_list: D037742:Nanotubes, Carbon; D006046:Gold
keywords: Raman scattering; gold nanoparticles; laser-induced heating; nanocomposites; nanothermometers; single-walled carbon nanotubes