Stability of Glasses

这个更新奖将继续支持伦斯勒理工学院MRG玻璃科学小组。它的研究主要集中在玻璃稳定性的化学和微观结构方面。化学性质的主题包括水在玻璃中的扩散，玻璃在水溶液中的溶解速率，海水中的侵蚀速率，氟化物和硫族红外玻璃的稳定性，以及离子注入二氧化硅玻璃的缺陷。其他研究涉及玻璃结构：溶解挥发物对相分离和相稳定性的影响、结构弛豫过程、光散射和声子衰减机制、高压下的行为以及氮掺杂的影响。这个合作的多研究者小组包括来自材料工程的四名教员，一名来自物理学，一名来自地质学。

This renewal award will continue support of the Rensselaer Polytechnic Institute MRG glass science group. Its research is focused on chemical and microstructural aspects of glass stability. Topics of a chemical nature include diffusion of water into glass, dissolution rates of glass in aqueous solutions, rates of attack in seawater, stability of fluoride and chalcogenide IR transmitting glasses, and defects in ion- implanted silica glass. Additional research deals with glass structure: influence of dissolved volatiles on phase separation and phase stability, structural relaxation processes, light scattering and phonon attenuation mechanisms, behavior under high pressure, and effects of nitrogen doping. The collaborative, multi-investigator group includes four faculty from materials engineering, one from physics, and one from geology.