Acquisition of a Dispersive Raman Spectrometer System for Basic Investigations on Network Glasses

9424556 Boolchand，Punit 该奖项的色散拉曼光谱仪系统将用于网络玻璃的基础研究。 约束理论预测，当每个原子的约束数量恰好等于每个原子的自由度时，网络的玻璃形成趋势在刚度（或刚度渗透）阈值附近被优化。 建议详细检查，在硫系玻璃中使用互补探针的这种刚度阈值的物理性质：拉曼散射和兰姆穆斯堡尔因子。 这些实验可能会导致这些玻璃的中程秩序的理解，这是目前不理解的。 该仪器将由对技术上重要的玻璃和半导体材料进行基础材料研究的研究人员以及在光子材料和毫米波技术领域进行研究的工程师共享。

9424556 Boolchand, Punit This award for a dispersive Raman spectrometer system will be used for basic investigations of network glasses. Constraint theory predicts the glass forming tendency of a network to be optimized near the stiffness (or rigidity percolation) threshold, when a number of constraints per atom exactly equals the degrees of freedom per atom. It is proposed to examine in detail, the physical nature of this stiffness threshold in chalcogenide glasses using complementary probes: Raman scattering and Lamb-Mossbauer factors. These experiments may lead to an understanding of the medium range order of these glasses, which is presently not understood. This instrument will be shared by investigators conducting fundamental materials research on technologically important glasses and semiconductor materials, and by engineers conducting research in the area of photonic materials and millimeter wave technology.