In-situ Raman spectroscopic measurements of the deformation region in indented glasses

Published

February 15, 2020

Author(s)

Yvonne B. Gerbig, Chris A. Michaels

Abstract

This paper describes the design and integration of a custom-built optical instrument for in- situ Raman microscopy suitable for collecting high-quality spectroscopic data during the indentation of glass materials. It will further show that the reported experimental setup enables meaningful in-situ spectroscopic observations during indentation of fused silica at forces in the milli-newton range. The aim of the paper is to demonstrate the vital importance of matching the analysis volume of the Raman microscopewith the indentation-induced deformation volume to capture the full extent of spectral alterations due to the deformed material by minimizing spectral contributions from the unperturbed bulk material (in-situ and ex-situ) and indenter probe (in-situ only). In this context, the paper will also touch upon possible pitfalls in ex-situ and in-situ Raman measurements on indented glasses in cases where the analysis and deformation volumes are not well matched and describe the misinterpretations that may result.

Citation

Journal of Non-Crystalline Solids

Volume

530

Pub Type

Journals

Download Paper

https://doi.org/10.1016/j.jnoncrysol.2019.119828

Local Download

Keywords

Indentation, Raman spectroscopy, fused silica (silicate glass), in-situ

Citation

Gerbig, Y. and Michaels, C. (2020), In-situ Raman spectroscopic measurements of the deformation region in indented glasses, Journal of Non-Crystalline Solids, [online], https://doi.org/10.1016/j.jnoncrysol.2019.119828 (Accessed October 9, 2025)