RUI: Physical Properties and Spectroscopy of Glasses Related to Intermediate Range Order

RUI：与中程有序相关的玻璃的物理性质和光谱学

• 批准号: 0211718
• 负责人: Steven Feller
• 金额: $ 16.5万
• 依托单位: Coe College
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-08-15 至 2005-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0211718&HistoricalAwards=false
• 关键词: RUI; Physical; Properties; Spectroscopy; Glasses

This is a Research at Undergraduate Institution (RUI) project. It is funded by the Ceramics Program and the Condensed Matter Physics Program. The glass science research focuses on the existence and effects of, "intermediate-range-order" in oxide glasses. It will involve undergraduates in a variety of projects: (1) Development of new solution chemistry for glass formation that avoids carbon dioxide retention and allows fabrication of glasses with high homogeneity and with extraordinarily high alkali concentrations. (2) Development of novel glasses in binary vanadates, borates, bismuthates, and various ternary systems through rapid cooling. (3) Determination of the relation between elasticity and other physical properties and the intermediate-range-order present. (4) Exploration of packing as a universal measure of glass structure using computer simulation or experiments to achieve random mixing of constructed clusters of atoms in shapes hypothesized for glass. (5) Neutron scattering, NMR, FT-Raman, FTIR, ultrasonic velocity of sound, and Brillouin light scattering will be used to detect intermediate-range-order. In particular, high-field NMR will be used for the first time to determine the intermediate site origins of tetrahedral boron atom in selected borate glasses and crystals. (6) Finally, students will help optimize a state-of-the-art twin roller-quenching system for glass fabrication. High school students and teachers will also participate in this work as a way of motivating these students to pursue careers in science. This is a Research at Undergraduate Institution (RUI) project. It is funded by the Ceramics Program and the Condensed Matter Physics Program. At least 12 undergraduates and several high school students and teachers will participate in significant, publishable glass science research projects. The determination of intermediate range order (clusters of atoms) and the impact of this order on a variety of physical properties are the main scientific goals. Novel glasses will be formed using rapid cooling and new chemical methods. The atomic structure will be determined using various spectroscopies. Properties such as density, optical absorption, and thermal effects will be measured and compared to structure. Students will be involved in instrument enhancement as well. All participants will receive training and encouragement to pursue careers as scientists: In the past 15 years, more than 100 students have been trained to do high level research at a school of ca. 1100 students. In support of these goals, the project includes active collaborations with major research centers in the US, Europe, and Japan: Rutherford-Appleton lab near Oxford, England and the Institute Laue Langevin, Grenoble, France (Neutron scattering); Indiana University and Iowa State University (NMR); Iowa State University and NHRF, Athens, Greece (Raman and infrared spectroscopy); Fudan University (Shanghai) second harmonic generation; Sojo University, Japan (ultrasound); Tsukuba University, Japan, (Brillouin and Raman Light Scattering); Rostock University, Germany, (x-ray diffraction).

这是本科机构（RUI）项目的研究。 它由陶瓷计划和冷凝物质物理计划资助。 玻璃科学研究的重点是氧化物玻璃中“中间阶”的存在和影响。 它将涉及多个项目的大学生：（1）开发玻璃形成的新溶液化学，以避免二氧化碳保留率，并允许制造具有高均匀性且碱浓度高的玻璃。 （2）通过快速冷却来开发二元钒酸盐，硼酸盐，生物座和各种三元系统中新型眼镜。 （3）确定弹性与其他物理特性之间的关系以及存在的中间范围。 （4）使用计算机模拟或实验将包装作为玻璃结构的通用度量，以实现对玻璃假设的形状中构造的原子簇的随机混合。 （5）中子散射，NMR，FT-Raman，FTIR，声音的超声速度和Brillouin Light散射将用于检测中间范围。 特别是，将首次使用高场NMR来确定选定的硼酸盐玻璃和晶体中四面体硼原子的中间位点起源。 （6）最后，学生将有助于优化用于玻璃制造的最先进的双滚筒液压系统。 高中生和老师还将参加这项工作，以激励这些学生从事科学职业。这是本科机构（RUI）项目的研究。 它由陶瓷计划和冷凝物质物理计划资助。 至少有12名大学生和几名高中生和老师将参加重要的，可发布的玻璃科学研究项目。确定中间范围顺序（原子簇）以及该顺序对各种物理特性的影响是主要的科学目标。 新型眼镜将使用快速冷却和新的化学方法形成。 原子结构将使用各种光谱法确定。将测量诸如密度，光吸收和热效应之类的特性，并将其与结构进行比较。 学生也将参与仪器的增强。 所有参与者都将接受培训和鼓励以作为科学家的职业生涯：在过去的15年中，已对100多名学生进行了培训，可以在CA的一所学校进行高级研究。 1100名学生。 为了支持这些目标，该项目包括与美国，欧洲和日本的主要研究中心的积极合作：英格兰牛津附近的卢瑟福 - 阿布尔顿实验室和法国格林诺布尔的劳埃·兰格文（Laue Langevin）（中子散射）； 印第安纳大学和爱荷华州立大学（NMR）；爱荷华州立大学和NHRF，雅典，希腊（拉曼和红外光谱）； 福丹大学（上海）第二次谐波；日本Sojo大学（超声）；日本杜斯库巴大学（布里渊和拉曼轻散射）；德国罗斯托克大学（X射线衍射）。