Upgrade of the Raman Spectroscopy System at the High-Pressure Lab of Arizona State University

亚利桑那州立大学高压实验室拉曼光谱系统升级

• 批准号: 2140416
• 负责人: Sang-Heon Shim
• 金额: $ 8.53万
• 依托单位: Arizona State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2022
• 资助国家: 美国
• 起止时间: 2022-02-01 至 2023-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2140416&HistoricalAwards=false
• 关键词: Upgrade; Raman; Spectroscopy; System; Pressure

This award will fund the upgrade of the Raman spectroscopy system at the high-pressure lab of Arizona State University (ASU). The upgrade includes a CCD detector, a spectrograph, and a 3D sample positioning system. The new components will not only enhance essential function of the system, vibrational spectroscopy, but also add a new capability: 2D and 3D micro phase mapping of the samples synthesized at high pressures and high temperatures. The upgrade will therefore open new research projects for undergraduate students, graduate students, and postdoctoral researchers at ASU, promoting the progress of science. In particular, the enhanced capability of the system will allow us to offer new research projects to undergraduate students, such as mantle experimental petrology, volatiles storage in mantle minerals, and software-hardware interfacing in scientific instrument. PI Shim has offered undergraduate research program since 2003. In the program, the Raman system has played a critical role and produced scientific articles first authored by undergraduate students. The majority of the undergraduate students in the research program are from minoritized groups and the upgrade will allow the PI to continue the effort, supporting education and diversity. The goal of the project is to upgrade the Raman system at the high-pressure lab at Arizona State University for enabling diverse types of measurements for mineral physics research. Micro-beam capability combined with transparency of diamond over a wide range of electromagnetic wave makes the Raman technique suitable for studying the extremely small sample inside diamond-anvil cell under high pressure. The 2D scanning capability of the micro-Raman technique can provide phase mapping for the samples synthesized at high pressures in multi-anvil press. PI Shim has used Raman spectroscopy extensively and produced numerous scientific results over the last 24 years, such as high-pressure behaviors of lattice and OH vibrational modes in mantle silicates, modeling vibrational density of state, stability of volatile-bearing minerals, structure of amorphous phases at high pressures, high-temperature behavior of minerals, and magnetic scattering. However, the key components of the existing system, CCD detector and spectrograph, are outdated and the quality of the data suffers from their ages (18 years). The upgrade will not only improve the quality of data from the Raman system but also add a new capability to the system: accurate 2D or 3D phase mapping. The new capability will be important for supporting expanding research areas of the high-pressure group at ASU, such as hydrogen storage in the Earth’s interior, lower-mantle petrology, and synthesis of high-density target materials for laser driven shock experiments.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

该奖项将资助亚利桑那州立大学（ASU）高压实验室的拉曼光谱系统的升级。升级包括CCD检测器，光谱仪和3D样品定位系统。新组件不仅将增强系统的基本功能，振动光谱法，而且还增加了新功能：在高压和高温下合成的样品的2D和3D微相映射。因此，升级将为本科生，研究生和ASU的博士后研究人员开放新的研究项目，从而促进科学的进步。特别是，该系统的增强能力将使我们能够为本科生提供新的研究项目，例如地幔实验性质学，地幔矿物质中的挥发性存储以及科学仪器中的软件硬件接口。皮希姆（Pi Shim）自2003年以来就提供了本科研究计划。在该计划中，拉曼系统（Raman System）发挥了至关重要的作用，并制作了本科生最初撰写的科学文章。研究计划中的大多数本科生来自少数小组，升级将使PI继续努力，支持教育和多样性。该项目的目的是在亚利桑那州立大学的高压实验室升级拉曼系统，以实现潜水员类型的矿物质物理研究测量结果。微光束能力与钻石在各种电磁波上的透明度相结合，使拉曼技术适合于在高压下研究钻石 - 大小细胞中极小的样品。微拉曼技术的2D扫描能力可以为在多型压力机中高压下合成的样品提供相位映射。 Pi Shim在过去24年中广泛使用了拉曼光谱，并产生了许多科学的结果，例如地幔硅酮中的晶格的高压行为和OH振动模式，建模状态的振动密度，挥发性矿物质的稳定性，高压散射的无形压力的无形阶段的结构，高机态散射，刻有型号的刻度和磁性散射。但是，现有系统CCD检测器和光谱仪的关键组成部分已经过时，数据的质量从其年龄（18岁）遭受。升级不仅将提高拉曼系统的数据质量，而且还会为系统添加新功能：准确的2D或3D相位映射。新功能对于支持ASU的高压组的扩展研究领域至关重要，例如地球内部的氢存储，低通质岩石学以及用于激光驱动冲击实验的高密度目标材料的合成。该奖项反映了NSF的法定任务，并通过评估智力的Merit和Broadial and Broadia and Broadia and Broadia and Broadia and Broadia and Broadia and Broadia and Broadia and Broadia and Broadia and Broadia and Broadia and tocria and tobleit。