Berlin 2024 – wissenschaftliches Programm
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DS: Fachverband Dünne Schichten
DS 8: Thin Film Properties II
DS 8.4: Vortrag
Mittwoch, 20. März 2024, 10:15–10:30, A 060
Calcium Made Interesting — •Kai Bröking1,2,3, Stephan Brückner1, Daniel Tasche1,2, and Christoph Gerhard1,4 — 1Hochschule für Angewandte Wissenschaft und Kunst, Göttingen, Germany — 2Technische Universität Clausthal, Fakultät für Natur- und Materialwissenschaften, Clausthal-Zellerfeld, Germany — 3Max-Planck-Institut für multidisziplinäre Naturwissenschaften, Göttingen, Germany — 4School of Industrial and Information Engineering, Politecnico di Milano, Milano, Italy
During manufacturing, optical glass components come into contact with a variety of process agents. An exchange between the glass and these chemical compounds leads to the accumulation of some of their ingredients in surface and sub-surface defects, and, by diffusion, in the glass itself [1]. On the other hand, a depletion of glass constituents near the glass surface takes place as well. As can be expected, these processes lead to unwanted changes in glass properties near the surface [2] and may facilitate its deterioration. We investigate both depletion and accumulation of metal ions near the surfaces of multi-component glasses and explore the scaling behaviours of the transport processes involved.
[1] Gerhard &al., Applied Surface Science Volume 537, 30 January 2021, 147984, doi:10.1016/j.apsusc.2020.147984
[2] Gerhard, Köhler, Opt Mater Expr Vol. 12, Issue 9, pp. 3658-3666 (2022), doi:10.1364/OME.458227
Keywords: Optical Glass; Surface defects; XPS; Optical Polishing; Ion Mobility