RUI: Spectroscopy of Many-Body Processes in Nanostructures

RUI：纳米结构多体过程的光谱学

• 批准号: 1206975
• 负责人: Tigran Shahbazyan
• 金额: $ 15.01万
• 依托单位: Jackson State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2012
• 资助国家: 美国
• 起止时间: 2012-09-01 至 2016-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1206975&HistoricalAwards=false
• 关键词: RUI; Spectroscopy; Many; Body; Processes

TECHNICAL SUMMARYThis award supports theoretical and computational studies of plasmonic nanomaterials and of optics and transport in semiconductor nanostructures. During past decade, plasmonics has become a rapidly developing interdisciplinary research area that cuts across physics, chemistry, biology, engineering and medical science. The research objectives of this project include:(1) Microscopic calculations of energy exchange processes between plasmons and molecules, quantum dots or electron-hole pairs which underpin the physics of surface-enhanced Raman scattering, metal luminescence, fluorescence or luminescence of molecules or quantum dots, and resonance energy transfer between donors and acceptors near a metal nanostructure.(2) Studies of cooperative phenomena due to plasmonic coupling between system constituent parts, such as spontaneous and stimulated emission of ensemble of fluorophores or resonance energy transfer from an ensemble of donors to an acceptor near a metal nanostructure.(3) Investigations of extraordinary electron transmission through a periodic system of quantum dots and quantum wires sandwiched between doped semiconductor leads, and of the role of spin-orbit coupling in coherent transport through a double-quantum-dot system.This project will provide research and educational opportunities to undergraduate students from underrepresented groups. Being a historically black predominantly undergraduate institution, Jackson State University primarily serves the educational needs of the local community. During past several years, the Physics Department at Jackson State University has developed a comprehensive Nanoscale Science undergraduate student research and education program with the aim of (a) exposing students to advanced topics of science and technology, and (b) providing additional resources and opportunities to physics majors who are willing to pursue graduate education in out-of-state universities. This project will help in strengthening the vital research component of this program.NONTECHNICAL SUMMARYThis award supports theoretical and computational studies of optical and transport properties of two classes of materials that have sizes of the order of one millionth the size of the human hair. The first part of this project involves spectroscopic studies of molecules or very small confined systems called quantum dots when they are placed near metallic materials. In such close proximity of the two systems, quantum mechanical effects become important. The PI and his group will examine the emission, absorption, and scattering of light from such hybrid systems through numerical simulations and analytical methods. The second part of the project involves studies of coherent electron transport through a periodic system of semiconductors or confined wires sandwiched between semiconductor leads and the role of the interaction between the spatial and spin degrees of freedom of the electron in such structural arrangements. Both systems of study have potential technological applications in such areas as sensing, medicine, and green energy.This project will provide research and educational opportunities to undergraduate students from underrepresented groups. Being a historically black predominantly undergraduate institution, Jackson State University primarily serves the educational needs of the local community. During past several years, the Physics Department at Jackson State University has developed a comprehensive Nanoscale Science undergraduate student research and education program with the aim of (a) exposing students to advanced topics of science and technology, and (b) providing additional resources and opportunities to physics majors who are willing to pursue graduate education in out-of-state universities. This project will help in strengthening the vital research component of this program.

技术摘要这一奖项支持等离子纳米材料以及半导体纳米结构中的光学和运输的理论和计算研究。在过去的十年中，血浆已成为一个迅速发展的跨学科研究领域，该领域跨越了物理，化学，生物学，工程和医学。该项目的研究目标包括：（1）在等离子和分子之间的能量交换过程，量子点或电子孔之间的能量交换过程，这些过程构成了表面增强的拉曼散射，金属发光，金属发光，荧光，分子点或量子点的量子和量子的量子转移（2之间的贡献）的物理（2）nNAN NNIN NNAN NANNANS（2）。到系统组成部分之间的等离子耦合，例如自发和刺激荧光团的合奏或共振能量从供体的集合转移到金属纳米结构附近的受体。（3）通过量子点和量子夹具的量子和量子的旋转器和量子的旋转器和量子的旋转器和量子孔的旋转器和量化的表达式的旋转，并在金属纳米结构附近转移。通过双倍点系统的连贯运输。该项目将为来自代表性不足的团体的本科生提供研究和教育机会。 杰克逊州立大学作为历史上的黑人主要是本科机构，主要满足当地社区的教育需求。 在过去的几年中，杰克逊州立大学的物理系开发了一项全面的纳米级科学本科生研究和教育计划，目的是（a）使学生了解科学和技术的先进主题，以及（b）为愿意从事州立大学寻求研究生教育的物理学专业的更多资源和机会。该项目将有助于加强该计划的重要研究组成部分。本科摘要这一奖项支持两类材料的光学和运输特性的理论和计算研究，这些材料的大小是人头发的大小的大小。该项目的第一部分涉及分子的光谱研究或将其放置在金属材料附近时称为量子点的非常小的狭窄系统。在这两个系统的如此紧密的接近度中，量子机械效应变得很重要。 PI和他的小组将通过数值模拟和分析方法检查从此类混合系统中光的发射，吸收和散射。 该项目的第二部分涉及通过半导体线之间的夹在半导体线之间的周期性系统或限制电线的周期性系统以及电子在这种结构排列中的空间和自旋自由度之间的相互作用的作用的研究。这两种研究系统都在感应，医学和绿色能源等领域都有潜在的技术应用。该项目将为来自代表性不足的群体的本科生提供研究和教育机会。 杰克逊州立大学作为历史上的黑人主要是本科机构，主要满足当地社区的教育需求。 在过去的几年中，杰克逊州立大学的物理系开发了一项全面的纳米级科学本科生研究和教育计划，目的是（a）使学生了解科学和技术的先进主题，以及（b）为愿意从事州立大学寻求研究生教育的物理学专业的更多资源和机会。该项目将有助于加强该计划的重要研究部分。