RUI: Physical Properties and Atomic Arrangements in Several Glass Systems

菲勒·科学院在玻璃科学方面有一个特殊的、不断增长的本科生研究项目。在过去的三年里，在光学表征和激光烧蚀飞行时间(TOF)质谱学方面增加了大量的专业知识和新的实验。这些学生在极端条件下(快速冷却和同时干盒保护)下制备玻璃方面具有专业知识，他们测量得到的样品的许多物理性质。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。这项研究的目的是将观察到的物理性质与原子排列模型定量地联系起来。玻璃将在广泛的成分范围内制备，并在本赠款的活动期内进行研究。将研究下列体系：碱土硼酸盐和硼硅酸盐；碱土锗酸盐和碱土锗酸盐；碱硼锗酸盐；碱性钒酸盐；以及碱性硼钒酸盐。将对这些玻璃进行热、机械和光学性质以及各种光谱测量。除了飞行时间外，FTIR和NQR技术也将被用于在COE学院进行的实验。该计划与其他几个主要研究小组积极合作。学生们将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-朗之万研究所反应堆实验室积极参与这项使用中子散射的合作研究。通常，研究材料是学生准备的玻璃样品。此外，还将与印第安纳大学、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(核磁共振和QMR)和振动光谱研究。新发现的钒酸盐玻璃的短程结构将通过X射线散射来确定。除了科学研究，还将对本科生的教育做出重大贡献。学生将参与包括实验设计、实验、修复工作、在全国会议上演讲、撰写论文等方方面面的科学工作，他们将在几年的时间里从事这项活动，从而为进入这个研究企业的下一代学生的介绍和培养做出贡献。学生们将准备进入顶尖的科学和工程研究生课程。COE学院的本科生和教职员工将共同研究新发现的眼镜。该项目的目标有四个：1)从新的化学配方中形成新的玻璃；2)表征这些新玻璃的物理性质。这包括玻璃的组成极限、密度、热效应和光学性质测量；3)使用光谱手段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变化；4)让本科生在原创和可发表的科学研究中扮演重要角色。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能够扩展他们的技术知识。这些合作将涉及学生参与在卢瑟福-阿普尔顿(英格兰)和劳伊-朗之万研究所(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，学生将准备进入各种科学或工程领域的高级研究研究生课程，以进行高级学科的培训。这一经验将使他们能够在20世纪今后几十年内在科学/技术领域中有成效地使用。

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.