Fiche publication
Date publication
juillet 2023
Journal
Nanomaterials (Basel, Switzerland)
Auteurs
Membres identifiés du Cancéropôle Est :
Dr BOUYER Frédéric
Tous les auteurs :
Hernando Abad E, Bouyer F, Chaabane L, Zerrouki A, Margueritat J, Saviot L
Lien Pubmed
Résumé
The vibrational dynamics in the sub-THz range of mesoporous silica nanoparticles (MSNs) having ordered cylindrical mesopores was investigated. MCM-41 and SBA-15 particles were synthesized, and their structure was determined using scanning electron microscopy (SEM), low-angle X-ray diffraction (XRD), N physisorption analyses, and Raman scattering. Brillouin scattering measurements are reported and enabled determining the stiffness of the silica walls (speed of sound) using finite element calculations for the ordered mesoporous structure. The relevance of this approach is discussed based on the comparison between the numerical and experimental results and previous works reported in the literature.
Mots clés
inelastic light scattering, mesoporous silica, phononic crystal
Référence
Nanomaterials (Basel). 2023 07 15;13(14):
