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Meeting MS&T22: Materials Science & Technology
Symposium Glasses and Optical Materials: Current Issues and Functional Applications
Presentation Title Glass Structure-Terahertz Properties Relationship: Power-Law Model and Deviations in Sodium Borosilicate, Tellurite, and Chalcogenide Glass Families
Author(s) Nicholas J. Tostanoski, S. K. Sundaram
On-Site Speaker (Planned) Nicholas J. Tostanoski
Abstract Scope We review the model previously reported in the 1970s and further advanced that focuses on terahertz (THz) refractive index and absorption coefficient relationship to glass structure and properties through the n(ν)α(ν)=〖K(hν)〗^β power-law. K and β parameters are determined by material properties and glass composition, respectively, and these values have been reported for various silicate glasses in the literature. We have used terahertz time-domain spectroscopy (THz-TDS) to record the refractive index and absorption coefficient across the measured THz bandwidth and ultimately extracted the K and β parameters for several families of borosilicate, tellurite, and chalcogenide glasses. Glasses studied include Na2O·B2O3·SiO2 with either Na2O or B2O3 held constant, Na2O·WO3·TeO2, La2O3·WO3·TeO2, As·S, and As·Se glass systems with compositions varying across their respective compositional spaces. We report a comprehensive set of K and β parameters for all glasses studied and reported in the literature and account for any deviations from the model.

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

3D Mapping of Glass Indentation Stress Fields
Continuation of the Investigation of Double Ion-exchange in Mixed Alkali-lime Silicate Glasses
D-13: Flow Dissolution of Lithium Disilicate Glass under Aqueous Conditions
D-15: Natural Glasses – Findings from an Undergraduate Project
D-17: Sulfur Blue Glasses - S3- Anion Charge Transfer Transitions
D-18: Tungsten Borate – A Replacement for Lead in Glass
D-19: Unusual High Oxidation States of Transition Metal Ions in Silicate Glasses of High Optical Basicity: Trivalent Co3+ and Ni3+
Effect of Ion-exchange Strengthening on the Mechanical Behavior of Sodium Aluminophosphosilicate Glass
Effect of Modifier Cation Type on Structure and Nickel Speciation in Alkali Borosilicate Glasses
Glass Structure-Terahertz Properties Relationship: Power-Law Model and Deviations in Sodium Borosilicate, Tellurite, and Chalcogenide Glass Families
Intermediate-range Order in Organic Glasses
Ionic Glasses: An Emerging Separate Class of Amorphous Materials with Unique Topology and Dynamic Properties
Lithium-iron Silicate Glasses as Simulations of High-Fe Nuclear Waste Glass
MD Simulations of SLS Batch Melting
Multispectroscopic Study of Lead Borate Glasses
Oxygen Triclusters and Five-Coordinated Alumina Species in Calcium-aluminosilicate Glasses
Structural Relaxation Mechanism of Anisotropic Alkali Metaphosphate Glass
Structure-property Relationship in Mixed Oxy-sulfide Glassy Solid Electrolyte Material: 0.58Li2S + 0.42 [(1–y­)SiS2 + yLiPO3]
The Dissolution of Lithium Disilicate Glass under Ultrasonic Cavitation
The Problem with Lead
Uncovering Hidden Glasses
Utilizing Electrical Impedance Spectroscopy (E.I.S.) to Observe In-situ Phase Changes in Lithium Diborate Glass Undergoing Thermal Relaxation

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