Atomistic modeling of structure and mechanical properties of silica
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Authors
Yuan, Fenglin
Issue Date
2013-12
Type
Electronic thesis
Thesis
Thesis
Language
ENG
Keywords
Materials science and engineering
Alternative Title
Abstract
The second scientific question is how to tune the mechanical anomaly of silica glass. Given that the localized reversible structural transition is the underlying mechanism, any means that can prevent such transitions would diminish or eradicate the mechanical anomaly completely. By using pressure-quenching or helium-stuffing to reduce the free volume needed for local structural transitions, the pressure dependent elastic moduli of silica glass changes from abnormal to normal with increasing the quenching pressure and the amount of helium atoms stuffed in the glass matrix. Our study showed that the microscopic structure of silica glass can be tuned in a controllable manner, so are the elastic properties.
Description
December 2013
School of Engineering
School of Engineering
Full Citation
Publisher
Rensselaer Polytechnic Institute, Troy, NY