Preparation and Characterization of New Chalcogenide Glasses

调查的目的是研究玻璃- 形成范围、密度、玻璃化转变温度、离子 硫化物的电导率和红外透射光谱 玻璃系统 碱金属和硫化银、硫化铝，以及 硼和硫化磷玻璃将在 控制环境条件，以消除氧气和水 蒸汽 物理性质将使用直接 电流电导率，差示扫描 量热法、傅里叶变换红外光谱法和核 磁共振。 这些玻璃的结构将是 与它们的氧化物类似物相比。 该请求包括研究经验， 本科生补充，这将使两个本科生 学生参与研究。 希望这一 实践经验将作为一种刺激，吸引高度- 资优学生进入教学和研究事业，以及 为实现该计划的总体目标做出贡献。 人们对科学和技术重新产生了兴趣 在这个一般组成范围内的玻璃， 低损耗红外光纤的潜在商业应用 光通信和光数据用波导 处理.

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.