Near field optical spectroscopy of hybrid nanoparticles for biosensor application and confocal microscopy of single silicon nanocrystals
type: Dataset
description: The domain of nanomatrials plays an important role in many biological, medical and electronic applications. In this work, we present results concerning two types of nanoparticles : the first kind treats with hybrid nanoparitcls chemically synthesized for biological means, the second concerns silicon nanocrystals fabricated by laser pyrolisis for optoelectronic applications. The studies are done by using two different optical techniques, one in the far field, the other in the near field. In the nanohybrids case, we are interested by spectroscopic, and imaging near field characterization, by particularly using a waveguide configuration. We will first shed light about the emission properties of such nanoparticles, and then discuss artefact problems, in addition to the resolution of the images we can attain in our setup. We will prove the essential importance of the role of nanohybrids as biological markers with two different types of biosensors. The small sized silicon nanoparticles (< 3 nm) are essentially studied by confocal microscopy. More precisely, we will be interested by the different luminescence processes taking place during the excitation of a unique nanoparticle, by taking into consideration the surface effects. We will search to study the influence of the nanoparticles environment on their spectral properties by placing them in thin films having different dielectric properties. We will conclude with a small description of the stark effects which take place in such a system
landing page: https://theses.hal.science/tel-00692395
identifier: NNT: 2009LYO10108
keyword: confocal-microscopy
keyword: guide-donde
keyword: infoeu-reposemanticsdoctoralthesis
keyword: microscopie-a-champ-proche-optique
keyword: microscopie-confocal
keyword: nanocristaux-de-siliciul
keyword: nanohybrides
keyword: nanoparticles
keyword: nanoparticules-uniques
keyword: physcondcm-genphysics-physicscondensed-matter-cond-matother-cond-matother
keyword: silicon-nanoparticles
keyword: theses
keyword: waveguide
issued: 2026-05-20T11:08:06.952827
modified: 2026-05-20T11:08:06.952833
language: en
contact point: Organization
  fn: CCSD

test_moissonnage_selune
type: Agent

Near field optical spectroscopy of hybrid nanoparticles for biosensor application and confocal microscopy of single silicon nanocrystals
type: Distribution
format: HTML
access URL: https://theses.hal.science/tel-00692395
issued: 2026-05-20T11:08:07.081128
modified: 2026-05-20T11:08:06.907946