RUI: Physical Properties and Atomic Arrangements in Several Glass Systems

9971659费勒科学院在玻璃科学方面有一个特殊的和不断发展的本科研究项目。在过去的三年中，在光学表征和激光烧蚀飞行时间（TOF）质谱方面增加了大量的专业知识和新的实验。学生们有在极端条件下（快速冷却同时有干箱保护）制备玻璃的专业知识，他们测量了所得样品的许多物理特性。这些玻璃上的许多相关光谱实验都是在科学院内部进行的。这项研究的目的是定量地将观察到的物理性质与原子排列模型联系起来。玻璃将在广泛的成分范围内制备，并在本基金的有效期内进行研究。将研究下列体系：碱土硼酸盐和硼硅酸盐；碱和碱土锗酸盐；碱borogermanates;碱钒酸盐类;碱硼钒酸盐。将对这些玻璃进行热、机械和光学性质以及各种光谱测量。除了TOF， FTIR和NQR技术也将在Coe学院进行的实验中使用。该计划与其他几个主要研究小组积极合作。学生们将积极参与这项在英国哈维尔的卢瑟福-阿普尔顿实验室和法国格勒诺布尔的劳厄-朗格万研究所反应堆实验室利用中子散射进行的合作研究。通常，研究材料是由学生准备的玻璃样品。此外，将与印第安纳大学、桑迪亚实验室和爱荷华州立大学的研究小组一起进行磁共振（NMR和QMR）和振动光谱研究。新发现的钒酸盐玻璃的短程结构将由x射线散射测定。除了科学研究之外，还将对本科生的教育做出重大贡献。学生将参与科学工作的各个方面，包括实验设计，实验，维修工作，在全国会议上发言，撰写论文，他们将在几年的时间内从事这项活动，从而为引进和培养下一代进入这项研究事业的学生做出贡献。学生将准备进入科学和工程领域的顶级研究生课程。科学院的本科生和教员将共同研究新发现的眼镜。该项目的目标有四个方面：1)从新的化学配方中形成新的玻璃；描述这些新玻璃的物理特性。这些包括玻璃成分限制、密度、热效应和光学性能测量；3)利用光谱学方法确定原子聚集方式的模型，并利用这些信息预测性质如何随组成而变化；4)让本科生在原创和可发表的科学研究中发挥重要作用。这项研究的大部分将在科学院内部完成。与其他研究小组的合作将使学生扩展他们的技术知识。这些合作将包括学生参与在卢瑟福-阿普尔顿（英国）和劳-朗格万研究所（法国）实验室进行的研究，在布朗、印第安纳和爱荷华州立大学以及桑迪亚国家实验室进行的核磁共振研究，以及在爱荷华州立大学进行的振动光谱学研究。通过任何或所有这些研究活动和互动，学生将准备进入研究生课程，在各种科学或工程领域进行高级课程的培训。这种经验将使他们能够在20世纪今后几十年里在科学/技术领域得到有效的利用。

9971659Feller Coe College has an exceptional and growing undergraduate research program in glass science. Substantial expertise and new experiments in optical characterization and laser ablation time of flight (TOF) mass spectrometry have been added during the last three years. The students have expertise in preparing glasses under extreme conditions (rapid cooling with simultaneous dry box protection) and they measure many physical properties on the resulting samples. Many of the associated spectroscopic experiments on these glasses are performed in-house at Coe College. The purpose of this research is to quantitatively relate observed physical properties with models of atomic arrangement. Glasses will be prepared over wide compositional ranges and studied during the active period of this grant,. The following systems will be investigated: Alkaline-earth borates and borosilicates; alkali and alkaline earth germanates; alkali borogermanates; alkali vanadates; and alkali borovanadates. Thermal, mechanical, and optical properties and various spectroscopic measurements will be performed on these glasses. Besides the TOF, FTIR and NQR techniques will also be used in the experiments done at Coe College. This program enjoys active collaborations with several other, major research groups. The students will actively participate in this collaborative research using neutron scattering at the Rutherford-Appleton Laboratory in Harwell, England, and the Institut Laue-Langevin reactor lab in Grenoble, France. Typically, the research materials are the glass samples prepared by the students. Also, magnetic resonance (NMR and QMR) and vibrational spectroscopic studies will be done with the groups at Indiana University, Sandia Laboratory, and Iowa State University. The short range structure of newly discovered vanadate glasses will be determined by x-ray scattering. In addition to the scientific research, there will also be significant contributions to the education of undergraduates. The students will be involved in all aspects of scientific work including experimental design, performing experiments, doing repair work, giving talks at national meetings, and writing papers, They will be engaged in this activity over a period of several years and thus contribute to the introduction and training of the next generation of students entering this research enterprise. The students will be prepared to enter top level graduate programs in science and engineering.%%%Undergraduate students and faculty at Coe College will jointly do research on newly discovered glasses. The goals of this project are fourfold: 1) Form new glasses from novel chemical formulations; 2) Characterize the physical properties of these new glasses. These include the glass compositional limits, density, thermal effects, and optical property measures; 3) Use spectroscopic means to determine models for the ways in which atoms group together, and use this information to predict how the properties change with composition; and 4) Involve undergraduates in significant roles in original and publishable scientific research. The bulk of this research will be done in-house at Coe College. Collaborations with other research groups will allow students to extend their knowledge of techniques. These collaborations will involve student participation in research done at the Rutherford-Appleton (England) and Institut Laue-Langevin (France) laboratories, in nuclear magnetic resonance studies at Brown, Indiana and Iowa State Universities, and the Sandia National Laboratory, and in vibrational spectroscopy at Iowa State University. Through any or all of these research activities and interactions, the students will be prepared to enter graduate programs for advanced studies in various scientific or engineering fields for training in advanced subjects. This experience will enable them to be productively employed in scientific/technological areas during the next few decades of the 20th Century.