MRI: Acquisition of a System for Novel Synthesis of Glasses in Extreme Environments

0922924附图科学院技术摘要这项拨款将允许科学院玻璃研究小组通过增加激光束加热空气动力学悬浮系统来提高他们的玻璃制造能力。该系统将使他们能够扩展几个技术上重要的玻璃家族的成分范围；研究新型玻璃材料；并在尖端材料开发方面培养本科生。它还将使Coe组在制备奇异氧化物玻璃和极端成分玻璃方面的能力得到提高。该仪器最初将用于研究新的玻璃形成系统，包括纯氧化物玻璃形成物，如TeO2和Sb2O3，以及二元化合物，如Na2O-Bi2O3。研究铅-碱-铝酸盐体系的脆性；并研究硼酸玻璃的多晶性。激光加热悬浮系统在新型合成中有许多优点。它可以达到样品温度约500至3000 K，远高于传统炉。它通过提供完全消除与表面接触的无容器加工环境来避免非均质结晶（从而增强玻璃形成）。它通过避免可能的坩埚污染来确保最终样品的纯度，而不考虑熔体的反应性（腐蚀）。一群大学生骨干将接受悬浮系统操作方面的培训，让他们接触到最先进的制造技术。当前，国家需要新材料来应对能源、医药、国家安全和环境等领域的各种挑战。这些新应用通常需要开发超越常规制造方法的新材料，以及具有材料专有技术的科学家团队。生产。在这项资助下进行的研究将使科学院的科学家和他们的本科生能够在极端条件下制造眼镜。也就是说，他们将使用激光加热和悬浮装置来融化玻璃颗粒，然后漂浮在半空中。通过使用这个？无容器？在加工过程中，他们将能够以闻所未闻的化学成分制造新型眼镜和传统眼镜。他们还将研究冷却速率和其他因素对玻璃结构差异的影响。在此过程中，他们将培训一批年轻科学家，让他们掌握制造尖端非晶态材料所需的技能，为未来职业生涯中的挑战做好准备。学生们将主要通过研究工作得到训练。对本科生研究人员的显著推动？而且还通过在选定的物理课程中使用该仪器。

0922924AffatigatoCoe CollegeTechnical summaryThis grant will allow the Coe College glass research groups to enhance their glass making capabilities through the addition of a laser beam heated aerodynamic levitation system. This system will enable them to extend the compositional range of several technologically important glass families; to study novel glassy materials; and to train undergraduate students in cutting-edge materials development. It will also allow the Coe groups to grow their abilities in the preparation of exotic oxide glasses and glasses at compositional extremes. The instrumentation will be initially used for the study of new glass forming systems, including pure oxide glassformers like TeO2 and Sb2O3 and binaries like Na2O-Bi2O3.; for the study of fragility in lead- and alkali-aluminate systems; and to investigate polyamorphism in borate glasses.The advantages of the laser-beam-heated levitation system in novel synthesis are many. It can attain sample temperatures from about 500 to 3000 K, much higher than traditional furnaces. It avoids heterogeneous crystallization (and hence enhances glass formation) by providing a containerless processing environment that completely eliminates contact with surfaces. It ensures the purity of the final sample by avoiding possible crucible contamination, regardless of the reactivity (corrosion) of the melt. A cadre of undergraduate students will be trained in the operation of the levitation system, exposing them to a state-of-the-art manufacturing technique.Layman?s summaryCurrently the nation needs new materials for a variety of challenges in the field of energy, medicine, national security, and the environment. These new applications often require the development of novel materials beyond what is available through normal manufacturing methods, as well as groups of scientists with the know-how of the materials? production.The research to be carried out under this grant will enable Coe College scientists, together with their undergraduate students, to make glasses under extreme conditions. Namely, they will use a laser-heating and levitation setup to melt and then float, in mid-air, a pellet of glass. By using this ?containerless? processing, they will be able to make new glasses and traditional glasses at unheard-of chemical compositions. They will also look at the differences in the structures of glasses as a function of cooling rates and other factors. In the process they will train a cadre of young scientists on the skills required to manufacture cutting-edge amorphous materials, readying them for future challenges in their careers. The students will get their training primarily through the research work?a significant boost for undergraduate researchers?but also through the use of the instrument in selected physics courses.