CAREER: Coherent Understanding of Magnetic Resonance in Controlling Radiative Transport from Far to Near Field

1454698 - wang节约能源是非常重要的，特别是在当前常规能源储量快速消耗和常规能源使用对环境的影响导致迫切需要高效的可再生能源和节能材料的情况下。该项目的成功最终将导致能量收集系统的广泛应用，利用“智能”涂层材料通过辐射冷却来转换太阳能并回收废热。这些智能材料在纳米尺度上，这个项目的努力是为了解决纳米尺度辐射传输的基本挑战。研究生和本科生都将参与这个研究项目。通过亚利桑那州立大学的各种项目，将开发两套教育工具包，以促进与当地K-12学生的推广活动，了解材料的辐射特性和传统原子力显微镜（AFM）的工作原理。其目的是激发他们对科学和工程的兴趣以及对高等教育的渴望。本项目旨在对磁共振在控制远场到近场不同长度尺度的辐射热输运方面的作用有一个连贯的认识。首先，利用先进的光谱技术，从低温到高温，在毫米到微米尺度上表征制备的超材料的辐射特性。其次，对超材料的新型远场辐射特性进行数值研究，利用波动电动力学理论分析超材料之间的近场辐射输运，并利用先进的热计量技术在纳米尺度上进行实验探测。第三，通过多物理场模拟研究等离子体局部加热引起的纳米尺度能量输运。利用先进的热计量技术和磁共振的起源，在纳米尺度上对近场能量传递进行测量和实验探索。除了推进对纳米尺度辐射传输的基本理解外，光谱测量平台还可以在很宽的温度范围内系统地研究辐射特性。纳米尺度红外光谱的新计量方法将提供纳米尺度上无法感知的光谱信息，而具有新型辐射特性的新型纳米结构将在能源、热管理和光学数据存储等领域得到广泛应用。CAREER项目的成功最终将导致广泛的民用、军事、航空航天和工业应用。研究成果将通过期刊出版物、会议报告和课程教学迅速传播。

1454698 - WangEnergy conservation is important especially when reserves of conventional energy sources are now fast depleting and environmental impact of conventional energy use have resulted in an urgent need for high-efficiency renewable energy sources and energy-saving materials. The success of this project will ultimately lead to wide applications of energy harvesting systems to convert solar energy and recover waste heat to power using "smart" coating materials for cooling by radiation. These smart materials are at the nano-scale sizes and efforts of this project are to address the fundamental challenges in nanoscale radiative transport. Both graduate and undergraduate students will be involved in this research project. Two educational kits will be developed to facilitate the outreach activities with local K-12 students, through various programs at Arizona State University, in understanding materials radiative properties and the working principle of conventional AFM (atomic force microscope). The aim is to spark their interests in science and engineering as well as desires for higher education.This project aims to gain a coherent understanding of magnetic resonance in controlling radiative thermal transport across different length scales from far to near field. First, Radiative properties of fabricated metamaterials will be characterized with advanced spectrometric techniques at millimeter to micrometer scale from cryogenic to high temperatures. Second, novel far-field radiative properties of metamaterials will be numerically studied, while near-field radiative transport between metamaterials will be theoretically analyzed with fluctuational electrodynamics and experimentally probed at nanometer scale by advanced thermal metrologies. Third, nanoscale energy transport due to plasmonic local heating will be investigated with multi-physics simulation. Near-field energy transfer will be measured and experimentally probed at nanometer scale with advanced thermal metrologies and the origin of magnetic resonance. Besides advancing the fundamental understanding in nanoscale radiative transfer, the spectrometric platform enables the systematic study of radiative properties over a wide temperature range. The novel metrology of nanoscale infrared spectroscopy will provide unperceived spectrometric information at nanometer scale, while the novel nanostructures with novel radiative properties will be demonstrated for various applications in energy, thermal management, and optical data storage. The success of this CAREER program will ultimately lead to a wide range of civil, military, aerospace, and industrial applications. The research outcomes will be quickly disseminated through journal publications, conference presentations, and course teaching.