EA: Upgrade of the Laser Heating System in the High-Pressure Diamond-Anvil Cell Laboratory at Arizona State University

该仪器和设备奖由亚利桑那州立大学（ASU）的PI Shim领导，将升级钻石砧细胞实验中使用的激光加热系统。这些类型的实验对于了解地球深处的内部结构至关重要。提出的增强功能包括将地球材料加热到非常高的温度，增加高精度样品定位和高分辨率成像的能力。这些升级解决了目前的限制，从而使更先进的研究能够理解极端条件，比如在地球深处发现的情况。这次升级意义重大，因为它将使研究人员能够探索早期地球的过程和化学演化，有助于我们更广泛地了解行星的形成和演化。多年来，沈的实验室已经成为培养有抱负的早期职业科学家的温床，特别是那些来自历史上被排除在STEM之外的群体的科学家，许多学生进入学术机构，国家实验室和工业，从而为不仅包括地球科学而且包括材料工程在内的领域做出了重大贡献。此次升级将进一步扩大这些教育机会，加强亚利桑那州立大学对科学研究和教育的多样性和卓越性的承诺，既促进科学理解，又继续为未来的科学家营造一个包容的环境。该合同将升级ASU Shim实验室的激光加热系统，以提高钻石砧细胞实验的加热质量，实现更高温度的加热、样品两侧激光功率的独立控制、氢介质实验的脉冲光束、精确的样品定位和高分辨率成像。这一升级至关重要，因为目前的系统依赖于单个100 W光纤激光器进行双面加热，加热能力限制在3000 K以上，并且缺乏脉冲加热组件，而脉冲加热对于研究地球深处的氢至关重要。实施这些改进将使学生和博士后研究人员能够进行重要的实验，扩大对早期地球过程和化学演化的理解。此外，该系统的增强符合对包容性研究的承诺，通过指导和涉及本科生的出版物来证明，特别是那些来自代表性不足背景的学生。升级将扩大亚利桑那州立大学的本科生研究机会，进一步促进STEM的多样性，特别是有利于其作为第三和第五章项目下的西班牙裔服务机构的地位。沈教授实验室的校友们在STEM领域获得了更高的学位，并担任着重要的职位。该奖项反映了美国国家科学基金会的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。

This Instrumentation and Facilities award, led by PI Shim at Arizona State University(ASU), will upgrade the laser-heating system used in diamond-anvil cell experiments. These types of experiments are crucial for understanding the Earth's deep interior. The proposed enhancements include the abilities to heat Earth materials to very high temperatures, and increase high-precision sample positioning, and high-resolution imaging. These upgrades address current limitations, thereby enabling more advanced research into understanding extreme conditions, like those found in the Earth's deep interior. This upgrade is significant as it will enable researchers to explore the processes and chemical evolution of early Earth, contributing to our broader understanding of planetary formation and evolution. Over the years, Shim's lab has become a nurturing ground for aspiring early career scientists, particularly those from groups historically excluded from STEM, with numerous students advancing to academic institutions, national laboratories, and industry, thereby contributing significantly to fields encompassing not only Earth science but also materials engineering. The upgrade will further expand these educational opportunities, reinforcing ASU's commitment to diversity and excellence in scientific research and education by both advancing scientific understanding and continuing to foster an inclusive environment for future scientists.This award will upgrade the Shim lab's laser-heating system at ASU to enhance heating quality in diamond-anvil cell experiments, enabling higher temperature heating, independent control of laser power on both sides of the sample, pulsed beams for hydrogen-media experiments, precise sample positioning, and high-resolution imaging. This upgrade is crucial as the current system, relying on a single 100 W fiber optic laser for double-sided heating, limits heating capabilities beyond 3000 K and lacks components for pulsed heating, which is pivotal in studying hydrogen in Earth's deep interior. Implementing these improvement will allow students and postdoctoral researchers to conduct important experiments, to expand understanding of early Earth processes and chemical evolution.Furthermore, the enhancement to the system aligns with the commitment to inclusive research, demonstrated through mentoring and publications involving undergraduate students, particularly those from underrepresented backgrounds. The upgrade will expand undergraduate research opportunities at ASU, furthering diversity in STEM, and particularly benefiting its status as a Hispanic Serving Institution under Title III and Title V programs. Alumni of Shim's lab have pursued advanced degrees and hold notable positions in STEM fields.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.