Atomistic modeling of structure and mechanical properties of silica

Authors
Yuan, Fenglin
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Other Contributors
Huang, Liping
Keblinski, Pawel
Picu, Catalin R.
Shi, Yunfeng
Tomozawa, Minoru
Issue Date
2013-12
Keywords
Materials science and engineering
Degree
PhD
Terms of Use
This electronic version is a licensed copy owned by Rensselaer Polytechnic Institute, Troy, NY. Copyright of original work retained by author.
Full Citation
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
Department
Dept. of Materials Science and Engineering
Publisher
Rensselaer Polytechnic Institute, Troy, NY
Relationships
Rensselaer Theses and Dissertations Online Collection
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