Optical Heating and Temperature Determination of Core-Shell Gold Nanoparticles and Single-Walled Carbon Nanotube Microparticles

Alexey Yashchenok, Admir Masic, Dmitry Gorin, Olga Inozemtseva, Bong Sup Shim, Nicholas Kotov, Andre Skirtach, Helmuth Möhwald

Research output: Contribution to journalArticlepeer-review

28 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)1320-1327
Number of pages8
JournalSmall
Volume11
Issue number11
DOIs
Publication statusPublished - 18 Mar 2015
Externally publishedYes

Keywords

  • gold nanoparticles
  • laser-induced heating
  • nanocomposites
  • nanothermometers
  • Raman scattering
  • single-walled carbon nanotubes

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