Preparation and Characterization of New Chalcogenide Glasses

本研究的目的是研究硫化玻璃体系的玻璃化范围、密度、玻璃化转变温度、离子电导率和红外透射光谱。碱和硫化银、硫化铝、硼和硫化磷玻璃将在受控的环境条件下制备，以消除氧气和水蒸气。物理性质将使用直流电导率、差示扫描量热法、傅里叶变换红外光谱和核磁共振来确定。这些玻璃的结构将与它们的氧化物类似物进行比较。该请求包括本科生研究经验补充，这将使两名本科生参与研究。希望这些实践经验能成为吸引高天赋学生从事教学和研究工作的激励因素，并为本计划的总体目标做出贡献。由于其在用于光通信和光数据处理的低损耗红外光纤波导中具有潜在的商业应用，因此在这种一般成分范围内的玻璃引起了新的科学和技术兴趣。

The objective of the investigation is to study the glass- forming ranges, densities, glass transition temperatures, ionic conductivities, and infrared transmission spectra of sulfide glass systems. Alkali and silver sulfide, aluminum sulfide, and boron and phosphorous sulfide glasses will be prepared in controlled ambient conditions to eliminate oxygen and water vapor. The physical properties will be determined using direct current electrical conductivity, differential scanning calorimetry, Fourier Transform Infrared Spectroscopy, and nuclear magnetic resonance. The structure of these glasses will be compared to their oxide analogues. The request includes a Research Experience for Undergraduates Supplement, which will enable two undergraduate students to participate in the study. It is hoped that this hands-on experience will serve as a stimulus to attract highly- gifted students into teaching and research careers, as well as to contribute to the overall goals of this program. There is renewed scientific and technological interest in the glasses in this general composition range because of their potential commercial application in low loss, infrared fiber waveguides for optical communications and optical data processing.