CAREER: Elucidating Light-Matter Interactions on the Nanoscale Using Quantum Many-Body Theory and the Electrodynamics of Swift Electrons

职业：利用量子多体理论和快速电子的电动力学阐明纳米尺度上的光与物质相互作用

• 批准号: 1253775
• 负责人: David Masiello
• 金额: $ 62.5万
• 依托单位: University of Washington
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-01-01 至 2017-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1253775&HistoricalAwards=false
• 关键词: CAREER; Elucidating; Light; Matter; Interactions

David J. Masiello of the University of Washington is supported by a CAREER award from the Chemical Theory, Models and Computational Methods program in the Chemistry division to develop the first multiscale theory of nanoscale light-matter interaction capable of correlating swift (i.e., relativistically moving) electrons with photons to elucidate the structure and dynamics of quantum emitters/absorbers embedded within extreme plasmon-supporting environments.In particular, Professor Masiello and his research group will:1) Establish a first-principles, multiscale theoretical framework capable of rigorously describing the severe deformations of a molecule's electronic structure when coupled strongly to a plasmonic environment, described by continuum electrodynamics;2) Numerically implement the electrodynamics of a swift electron and its interactions with a complex nanoscopic environment to characterize the relationship between electron and photon-driven plasmonic excitations and their associated nanophotonic properties;3) Correlate electron- and photon-excitation sources to learn about the redistribution of energy between near- and far-field and nanoconfined heat in plasmonically active metal nanostructures in the presence of quantum emitters/absorbers, with an emphasis on the achieving high spatial and spectral resolution.This research will broadly impact the next generation of cutting-edge experiments in nanophotonics and nanoplasmonics by establishing rigorous and computationally tractable theoretical methods capable of elucidating and predicting observation in a first-principles manner. Significant impact will be made in understanding a variety of plasmon-enhanced molecular-optical processes from linear and nonlinear optical spectroscopy to sensing and catalysis, down to the single-molecule level. The knowledge gained from this research will establish the basic scientific underpinnings needed for future high-efficiency solar light-harvesting devices and chemical sensors of use in the medical and defense sectors. Professor Masiello and his group will also mentor under-represented minority students at the high-school and college-level through the University of Washington's Math Academy and Louis Stokes Alliance for Minority Participation Bridge Program. The goal of these efforts is to stimulate interest in science, technology, engineering, and mathematics among under-represented minorities by using advanced computational techniques to simulate the increased efficiency of novel solar-cell architectures enhanced by the addition of plasmonic nanoparticle assemblies.

华盛顿大学的David J.Masiello得到了化学系化学理论、模型和计算方法计划的职业奖的支持，他发展了第一个纳米尺度光-物质相互作用的多尺度理论，能够将快速(即，相对运动的)电子与光子关联起来，以阐明嵌入极端等离子体支持环境中的量子发射器/吸收器的结构和动力学。特别是，Masiello教授和他的研究小组将：1)建立一个第一原理的多尺度理论框架，能够严格描述分子的电子结构在强烈耦合到等离子体环境时的严重变形，用连续体电动力学描述；2)数值实现快电子的电动力学及其与复杂纳米环境的相互作用，以表征电子和光子驱动的等离子体激子激发及其相关的纳米光子性质之间的关系；3)关联电子和光子激发源，了解在量子发射器/吸收体存在的等离子体活性金属纳米结构中近、远场和纳米限制热之间的能量重新分配，重点是实现高空间和光谱分辨率。这项研究将通过建立严谨和易于计算的理论方法来广泛影响下一代纳米光子学和纳米等离子体的前沿实验，能够以第一原理的方式阐明和预测观测。这将对理解等离子体激元增强的各种分子光学过程产生重大影响，从线性和非线性光学光谱到传感和催化，再到单分子水平。从这项研究中获得的知识将为未来医疗和国防部门使用的高效太阳能集光设备和化学传感器奠定基本的科学基础。马西洛教授和他的团队还将通过华盛顿大学数学学院和路易斯·斯托克斯少数族裔参与桥梁计划，在高中和大学水平上指导代表不足的少数族裔学生。这些努力的目标是通过使用先进的计算技术来模拟通过添加等离子体纳米颗粒组件来提高新型太阳能电池体系结构的效率，从而激发未被充分代表的少数群体对科学、技术、工程和数学的兴趣。