Origin and mechanisms of volume swelling in borosilicate glass during femtosecond-laser-microforming
Skiba M, de Ligny D, Lasagni AF, Bliedtner J (2026)
Publication Type: Journal article
Publication year: 2026
Journal
Book Volume: 30
Article Number: 100942
DOI: 10.1016/j.rinma.2026.100942
Abstract
This study investigates the mechanisms of ablation-free microforming of borosilicate glass using Raman spectroscopic structural analysis. The glass sample is irradiated by a femtosecond-laser scanning process, inducing surface topography changes and a volume change within the irradiated region. Raman measurements were performed in the central volume of the sample. Raman mapping and line scans are compared with reference samples obtained by controlled heat treatments (annealing), thereby enabling both qualitative and quantitative evaluations of the laser-induced structural modifications. Correlations between Raman signal and glass density allow determining the origin of the local volume changes. High cooling rates during microforming correlate with a Raman shift toward higher wavenumbers (Δ ∼6 cm−1) and the associated decrease in density (Δ ∼0.5 %). From these relationships, the density distribution within the microformed region is derived and fully explains the volumetric change.
Authors with CRIS profile
Involved external institutions
Ernst-Abbe-Hochschule Jena (FH/EAH Jena) / Ernst Abbe University of Applied Sciences Jena
Germany (DE)
Technische Universität Dresden
Germany (DE)
Germany (DE)
Technische Universität Dresden
Germany (DE)
How to cite
APA:
Skiba, M., de Ligny, D., Lasagni, A.F., & Bliedtner, J. (2026). Origin and mechanisms of volume swelling in borosilicate glass during femtosecond-laser-microforming. Results in Materials, 30. https://doi.org/10.1016/j.rinma.2026.100942
MLA:
Skiba, Marina, et al. "Origin and mechanisms of volume swelling in borosilicate glass during femtosecond-laser-microforming." Results in Materials 30 (2026).
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