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).

这是一个本科研究机构（RUI）项目。 它由陶瓷计划和凝聚态物理计划资助。 氧化物玻璃中"中程有序"的存在及其影响是玻璃科学研究的热点。 它将涉及本科生在各种项目：（1）新的解决方案化学玻璃形成的发展，避免二氧化碳滞留，并允许高均匀性和非常高的碱浓度的玻璃制造。 (2)通过快速冷却开发钒酸盐、硼酸盐、铋酸盐二元系和各种三元系的新型玻璃。 (3)确定弹性和其它物理性质之间的关系以及中程有序的存在。 (4)探索填充作为玻璃结构的通用度量，使用计算机模拟或实验来实现所构造的原子簇在玻璃的假设形状中的随机混合。(5)中子散射，核磁共振，傅立叶变换拉曼光谱，傅立叶变换红外光谱，超声声速和布里渊光散射将被用来检测中程秩序。 特别是，高场核磁共振将首次用于确定在选定的硼酸盐玻璃和晶体中四面体硼原子的中间位起源。(6)最后，学生将帮助优化最先进的双辊淬火系统的玻璃制造。 高中学生和教师也将参与这项工作，作为激励这些学生从事科学事业的一种方式。这是一个本科研究机构（RUI）项目。 它由陶瓷计划和凝聚态物理计划资助。 至少有12名本科生和几名高中生和教师将参加重要的，可持续的玻璃科学研究项目。确定中程有序（原子簇）以及这种有序对各种物理性质的影响是主要的科学目标。 将使用快速冷却和新的化学方法形成新型玻璃。 原子结构将使用各种光谱测定。将测量诸如密度、光吸收和热效应等特性，并与结构进行比较。 学生也将参与仪器改进。 所有参与者都将接受培训和鼓励，以追求科学家的职业生涯：在过去的15年里，100多名学生接受了培训，在加州的一所学校做高水平的研究。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：英国牛津附近的卢瑟福-阿普尔顿实验室和法国格勒诺布尔的劳厄朗之万研究所（中子散射）;印第安纳州大学和爱荷华州州立大学（核磁共振）;爱荷华州州立大学和NHRF，希腊雅典（拉曼和红外光谱）;复旦大学（上海）二次谐波产生;日本Sojo大学（超声）;日本筑波大学（布里渊和拉曼光散射）;德国罗斯托克大学（X射线衍射）。