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Meeting MS&T24: Materials Science & Technology
Symposium Glasses and Optical Materials: Current Issues and Functional Applications
Presentation Title Accelerated Relaxation of Chalcogenide Glasses via Thermo-Ultrasonication
Author(s) Patrick E. Lynch, Lam Tran, Ecem A. Yamac, Gil B. J. Sop Tagne, Christian Cano, Philip Marrero, Arron Phillips, Rashi Sharma, Rebecca S. Welch, Cosmin-Constantin Popescu, Juejun Hu, Kathleen Richardson, Steve Feller, William LaCourse, Stuart I. Yaniger, Collin J. Wilkinson, Myungkoo Kang
On-Site Speaker (Planned) Patrick E. Lynch
Abstract Scope Glasses exhibit time-dependent structural relaxation, often leading to temporally inconsistent response under post treatments. This inconsistency is a substantial issue in the development of novel optical materials since their optical properties need to be maintained over a long period of time. To tackle this issue, we employ a novel experimental approach which involves the usage of thermo-ultrasonication, to expedite the structural relaxation of chalcogenide glasses and enable their consistent optical response. Here, we present the use of As2S3 chalcogenide bulk glasses as testbed materials due to their low glass transition temperatures (Tg) and prevalent use as optical materials. The samples were subjected to ultrasonic vibration at an elevated temperature slightly below Tg to accelerate the structural relaxation rate. We employ a combined theoretical-experimental approach to the improved kinetics of their structural relaxation in terms of linear refractive index as well as optical band-edge evolution and discuss our process’ applicability to a broader range of glass system.

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

Accelerated Relaxation of Chalcogenide Glasses via Thermo-Ultrasonication
Investigation of the Alkali and Alkali-Earth Effect on Crystallization of SnO2 in LAW Glasses for WTP
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LionGlass™: A Zinc Aluminosilicophosphate (ZASP) Glass That Reduces Carbon Emissions by 65%
Solution Based Processing of Ge2Sb2Se4Te1 Phase Change Material for Optical Applications
Structural Relaxation of a Medieval Cathedral Glass
Structure-Property Correlation in the Bi2O3-ZnO-B2O3 Pyroborate Glass System
Structure-Property Relations in the 60Li2S + 30SiS2 + xLiSbO3 + (10-x)LiPO3 Glass System
Structure and Dynamics of Silica Glass Surfaces Treated with HF and HCl Acids
Studying Enthalpy Relaxation of Sodium Aluminosilicate Glasses Using Modulated Differential Scanning Calorimetry
Subsolidus Phase Diagrams of the In2O3-SnO2-ZnO System at 1400 and 1500 ℃ and New Ternary In2Sn2Zn2O9 Phase
What is the Best Glass Material for Optical Fibres – Soft Glass or Silica? – It Depends
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