RIA: Investigation of Ion-Exchanged Glass Using Glancing Angle EXAFS

RIA：使用掠射角 EXAFS 研究离子交换玻璃

• 批准号: 8910099
• 负责人: Susan Houde-Walter
• 金额: $ 6万
• 依托单位: University of Rochester
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1989
• 资助国家: 美国
• 起止时间: 1989-08-01 至 1992-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8910099&HistoricalAwards=false
• 关键词: RIA; Investigation; Ion; Exchanged; Glass

This research program uses glancing angle Extended X-ray Absorption Fine Structure (EXAFS) x-ray absorption spectroscopy to investigate the structure of multicomponent glasses and how they are changed by dopant diffusion. The structure of two types of glasses will be investigated. In the first type, a "single alkali" glass, only one elemental component participates in ion exchange with the dopant. In the second "mixed alkali" type, two or more components interact with the dopant cation. Dopant diffusion is expected to occur along "percolation channels" throughout the glass; these should be different in character for the two glass types. Further, these channels are expected to close off near the glass surface due to alkali leaching during surface polishing. The results of this study are expected to have a direct impact on integrated optics technology, micro-optics and gradient-index optics, all of which use ion exchange in glass for fabrication of many of their components. The EXAFS measurements will be in collaboration with Professor G. N. Greaves of the Daresbury Laboratory, an international synchrotron facility in Warrington, England.

该研究计划使用瞥见角度扩展X射线吸收细胞（EXAFS）X射线吸收光谱，以研究多组分玻璃的结构以及如何通过掺杂剂扩散而改变它们。 将研究两种类型的眼镜的结构。 在第一种类型的“单个碱性”玻璃中，只有一个元素成分参与与掺杂剂的离子交换。 在第二种“混合碱性”类型中，两个或多个成分与掺杂阳离子相互作用。 预计整个玻璃中的“渗滤通道”会发生掺杂剂扩散。对于两种玻璃类型，它们的性质应该不同。 此外，由于表面抛光期间的碱浸出，这些通道有望在玻璃表面附近关闭。 这项研究的结果预计将直接影响集成的光学技术，微观访问和梯度指数光学器件，所有这些都使用玻璃中的离子交换来制造许多组件。 EXAFS的测量将与英格兰沃灵顿的国际同步基金设施达斯伯里实验室的G. N. Greaves教授合作。