Home > Articles > Published articles > Contactless characterization of the elastic properties of glass microspheres |
Date: | 2023 |
Abstract: | Glass microspheres are of great interest for numerous industrial, biomedical, or standalone applications, but it remains challenging to evaluate their elastic and optical properties in a non-destructive way. In this work, we address this issue by using two complementary contactless techniques to obtain elastic and optical constants of glass microspheres with diameters ranging from 10 to 60 µm. The first technique we employ is Brillouin Light Scattering, which yields scattering with longitudinal acoustic phonons, the frequency of which is found to be 5% lower than that measured in the bulk material. The second technique involves exciting the optical whispering gallery modes of the microspheres, which allows us to transduce some of their vibrational modes. The combined data allow for extracting the refractive index and the elastic constants of the material. Our findings indicate that the values of those properties are reduced with respect to their bulk material counterpart due to an effective decrease of the density, resulting from the fabrication process. We propose the use of this combined method to extract elastic and optical parameters of glass materials in microsphere geometries and compare them with the values of the pristine material from which they are formed. |
Grants: | Agencia Estatal de Investigación PID2021-124618NB-C22 Agencia Estatal de Investigación TED2021-132040B-C21 Agencia Estatal de Investigación SEV-2017-0706 European Commission 753450 Ministerio de Economía y Competitividad FIS2015-70862-P Agència de Gestió d'Ajuts Universitaris i de Recerca 2021/SGR-1238 |
Rights: | Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original. |
Language: | Anglès |
Document: | Article ; recerca ; Versió publicada |
Subject: | Biomedical applications ; Brillouin light scattering ; Bulk materials ; Contact less ; Contactless technique ; Elastic properties ; Glass microspheres ; Longitudinal acoustic phonons ; Non destructive ; Standalone applications |
Published in: | APL materials, Vol. 11 (April 2023) , art. 41128, ISSN 2166-532X |
8 p, 8.1 MB |