CAREER: Understanding Nanoscale Radiative Transport in Multi-Body Systems

职业：了解多体系统中的纳米级辐射传输

• 批准号: 2237003
• 负责人: Mohammad Ghashami
• 金额: $ 62.97万
• 依托单位: University of Nebraska-Lincoln
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2023
• 资助国家: 美国
• 起止时间: 2023-07-01 至 2028-06-30
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2237003&HistoricalAwards=false
• 关键词: CAREER; Understanding; Nanoscale; Radiative; Transport

Thermal management of nanodevices requires a solid understanding of radiative heat transfer in reduced dimensions. To date, experiments involving radiative heat transfer have been limited by a focus on two-body systems. This CAREER program will explore the potential of systems containing more than two objects (i.e., multi-body systems) to lead to new physical and transport behaviors and, as a result, enable new applications in domains of national importance such as aerospace electronics, energy conversion technology, and information processing. To create these new technologies, it is essential to experimentally study and understand nanoscale radiative heat transfer between multiple objects and explore its use for improving heat exchange and thermal control. Thus, a primary outcome of this research will be a novel technique that enables the study of nanoscale radiative heat transfer among multiple objects. In addition to providing the fundamental knowledge necessary to advance thermal control at the nanoscale, this program will implement an innovative educational platform that promotes practical workforce development in academia by bridging the gap between academic work and industrial problems and stimulates curiosity among K-12 students in exploring engineering careers. This CAREER program will apply the physics of radiative transport in multi-bodies to solve thermal control problems in nanodevices. Specifically, this research will experimentally uncover the governing physics that drive electromagnetic waves-matter interactions in multi-body systems to identify the contributing factors in near-field radiative heat transfer (NFRHT). This work will provide new knowledge critical to the development of next-generation nanodevices by: (1) understanding the effect of structural factors on NFRHT in multi-bodies and (2) elucidating the role of multi-body physics in NFRHT for active thermal management. Significant structural and material factors in the spatial confinement of evanescent photons between multi-bodies will be identified through precision heat transfer measurements. Findings will provide in-depth understanding on how multiple interactive objects within micro/nano-dimensions impact radiative transport mechanisms—knowledge that will have far-reaching implications for advancing the thermal management of state-of-the-art high-power systems in industrial and technological applications. This research is integrated with education objectives to: (1) create an Academic-Industry Bridge (AIB) initiative for undergraduate and graduate students and (2) extend the AIB initiative to include an interactive platform for hands-on research projects for K- 12 students. Collaborations with Navajo Technical University and the University of Texas Rio Grande Valley will ensure engagement with diverse audiences.This project is jointly funded by the Thermal Transport Processes Program in the Chemical, Bioengineering, Environmental and Transport Systems (CBE) Division of the Engineering Directorate, and the Established Program to Stimulate Competitive Research (EPSCoR).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.

纳米器件的热管理需要对减小尺寸的辐射热传递有扎实的理解。迄今为止，涉及辐射传热的实验一直受到两体系统的限制。这个职业计划将探索包含两个以上对象的系统的潜力（即，多体系统），导致新的物理和运输行为，并因此，使新的应用领域的国家重要性，如航空航天电子，能量转换技术，和信息处理。为了创造这些新技术，必须通过实验研究和理解多个物体之间的纳米级辐射传热，并探索其用于改善热交换和热控制的用途。因此，这项研究的主要成果将是一种新的技术，可以研究多个物体之间的纳米级辐射传热。除了提供必要的基础知识，以推进热控制在纳米级，该计划将实施一个创新的教育平台，通过弥合学术工作和工业问题之间的差距，促进在学术界的实际劳动力发展，并激发好奇心K-12学生在探索工程职业。该职业计划将应用多体辐射传输的物理学来解决纳米器件中的热控制问题。具体来说，这项研究将通过实验揭示多体系统中驱动电磁波-物质相互作用的主导物理学，以确定近场辐射传热（NFRHT）的影响因素。这项工作将通过以下方式为下一代纳米器件的开发提供至关重要的新知识：（1）了解结构因素对多体NFRHT的影响，以及（2）阐明多体物理学在NFRHT中的作用，以进行主动热管理。通过精确的传热测量，将确定多体之间倏逝光子空间限制的重要结构和材料因素。研究结果将提供深入了解如何在微/纳米尺度的影响辐射传输机制的知识，将有深远的影响，推进国家的最先进的高功率系统在工业和技术应用的热管理的多个相互作用的对象。这项研究与教育目标相结合，以：（1）为本科生和研究生创建学术-行业桥梁（AIB）计划，（2）扩展AIB计划，包括为K- 12学生提供动手研究项目的互动平台。与纳瓦霍技术大学和得克萨斯大学格兰德河谷的合作将确保与不同的受众接触。该项目由工程理事会化学，生物工程，环境和运输系统（CBE）部门的热运输过程计划共同资助，以及刺激竞争研究的既定计划（EPSCoR）该奖项反映了NSF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。