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

MRI：获取在极端环境下新型眼镜合成系统

• 批准号: 0922924
• 负责人: Mario Affatigato
• 金额: $ 14.45万
• 依托单位: Coe College
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-10-01 至 2010-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0922924&HistoricalAwards=false
• 关键词: MRI; Acquisition; System; Novel; Synthesis

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.

0922924 AffatigatoCoe学院技术概述该补助金将允许Coe学院玻璃研究小组通过增加激光束加热的空气动力悬浮系统来提高其玻璃制造能力。 该系统将使他们能够扩展几个技术上重要的玻璃家族的组成范围;研究新型玻璃材料;并培养尖端材料开发的本科生。 这也将使科组增长他们的能力，在异国情调的氧化物玻璃和玻璃的组成极端的准备。 该仪器最初将用于研究新的玻璃形成体系，包括纯氧化物玻璃形成体，如TeO 2和Sb 2 O3，以及二元化合物，如Na 2 O-Bi 2 O3。用于铅-和碱-铝酸盐体系的脆性研究，以及硼酸盐玻璃的多晶性研究。激光束加热悬浮系统在新颖合成中有许多优点。 它可以达到约500至3000 K的样品温度，远高于传统的炉。 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匀结晶（从而增强玻璃形成）。 无论熔体的反应性（腐蚀性）如何，它都能避免可能的坩埚污染，从而确保最终样品的纯度。 一批本科生将接受悬浮系统操作方面的培训，让他们接触最先进的制造技术。目前，国家需要新材料来应对能源、医药、国家安全和环境领域的各种挑战。 这些新的应用往往需要开发新的材料，超出了通过正常的制造方法，以及科学家群体的专业知识的材料？这项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熔化，然后在半空中漂浮一个玻璃球。 用这个？没有集装箱？通过加工，他们将能够以闻所未闻的化学成分制造新的玻璃和传统玻璃。 他们还将研究玻璃结构的差异，作为冷却速度和其他因素的函数。 在此过程中，他们将培养一批年轻科学家，掌握制造尖端非晶材料所需的技能，为他们未来的职业挑战做好准备。 学生们将主要通过研究工作得到训练。对本科研究人员来说是一个重大的推动？而且还通过在选定的物理课程中使用该仪器。