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Meeting Materials Science & Technology 2020
Symposium Glasses, Optical Materials, and their Functional Applications: Current Issues in Science & Technology
Presentation Title Surface Reactivity of Multi-component Glasses
Author(s) Alastair Cormack
On-Site Speaker (Planned) Alastair Cormack
Abstract Scope The reactivity - or otherwise - of glasses depends largely, if not exclusively, on their surface structures. More specifically, it is the atomic level details which determine the interaction of environmental species, such as water, with the surfaces. These atomic level structural species are hard to determine in details from experimental studies, particularly in multi-component systems. In this presentation, we will discuss the structural moieties which have been found to occur on the surface in some multi-component silicate glasses from molecular dynamics computer simulations. Water molecules interacting with the glass surface create hydroxyl species, such as Si-OH or Al-OH, whose stability has been investigated as a function of time. The results suggest that local structural chemistry plays a key role in both the formation and stability of hydroxylated species.
Proceedings Inclusion? Undecided


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