"Collaborative Research: Dynamical Processes in Semiconductor Nanowires in the Quantum Regime"

“合作研究：量子体系中半导体纳米线的动力学过程”

• 批准号: 1105121
• 负责人: Jan Yarrison-Rice
• 金额: $ 8.04万
• 依托单位: Miami University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-09-15 至 2014-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1105121&HistoricalAwards=false
• 关键词: Collaborative; Research; Dynamical; Processes; Semiconductor

****Technical Abstract****Semiconductor nanowires have recently emerged as a new class of materials with significant potential for the advancement of understanding of fundamental physics and for new applications in device physics. This project will bring together expertise in state-of-the-art semiconductor nanowire growth, in modeling of these structures, and in unique excitation spectroscopies in order to advance the understanding of dynamical properties of semiconductor nanowires whose diameters are in the quantum regime. This project will: support the design and growth of unique radial and axial nanowire heterostructures; develop new optical tools for measurement of quantum states and their interactions; investigate nanowire heterostructures in the quantum regime using these new tools; employ highly localized electric fields to manipulate and probe the electronic states in the nanowire heterostructures; carry out optical and transport measurements; and explore spin dynamics in these nanowire heterostructures. By designing, growing, and probing nanowire radial and axial heterostructures with length scales from 5 nm - 50 nm, we will access the truly quantum regime in these materials. Graduate and undergraduate students will be trained in state-of-the-art techniques, which are an excellent preparation for careers ranging from research and education in academia, to applied development research in technologically advanced industries. The goal of this research is to advance the understanding of dynamical processes in semiconductor nanowires in the quantum regime.****Non-Technical Abstract****Semiconductor nanowires have recently emerged as a new class of materials with significant potential for the advancement of understanding of fundamental physics and for new applications in device physics. The research in this project will bring together expertise in state-of-the-art semiconductor nanowire growth, in modeling of these structures, and in experimental efforts that will advance the understanding of semiconductor nanowires whose diameters are less than 50 nm (1/1000 of the diameter of a human hair), a range where the materials themselves are comparable to the size of the wavelength of electrons. Remarkable phenomena and new technological opportunities are expected when synthetic materials can be designed so as to control the electron wavefunctions. These states can be probed using both optical and transport measurements by using highly localized electric fields, magnetic fields, and utilizing unique nanowire heterostructures. This research will be particularly directed towards the effect of spins in these materials where both new physics and new technologies may be enabled. Graduate and undergraduate students will be trained in state-of-the-art optical and electronic techniques for looking at single nanowires. Such training is excellent preparation for careers from research and teaching in academia to applied development in the most technologically advanced industries. The overall goal of this research is to advance the understanding of dynamical processes in semiconductor nanowires in the quantum regime

*技术摘要*半导体纳米线最近作为一类新的材料出现，在促进对基础物理的理解和在器件物理中的新应用方面具有巨大的潜力。该项目将汇集最先进的半导体纳米线生长、这些结构的建模以及独特的激发光谱方面的专业知识，以促进对直径处于量子区域的半导体纳米线的动力学特性的理解。该项目将：支持独特的径向和轴向纳米线异质结构的设计和生长；开发用于测量量子态及其相互作用的新的光学工具；使用这些新工具研究量子区域中的纳米线异质结构；使用高度局域电场来操纵和探测纳米线异质结构中的电子态；进行光学和输运测量；以及探索这些纳米线异质结构中的自旋动力学。通过设计、生长和探测长度范围从5 nm到50 nm的纳米线径向和轴向异质结构，我们将获得这些材料中真正的量子区域。研究生和本科生将接受最先进的技术培训，这是为从学术界的研究和教育到技术先进行业的应用开发研究等职业的极好准备。这项研究的目的是促进对半导体纳米线在量子区域中动力学过程的理解。*非技术摘要*半导体纳米线最近作为一类新的材料出现，在促进对基础物理的理解和在器件物理中的新应用方面具有巨大的潜力。该项目的研究将汇集最先进的半导体纳米线生长、这些结构的建模以及实验方面的专业知识，这些专业知识将促进对直径小于50 nm(人类头发直径的1/1000)的半导体纳米线的理解，在这个范围内，材料本身可以与电子波长的大小相媲美。当合成材料被设计成可以控制电子波函数时，人们期待着显著的现象和新的技术机会。通过使用高度局域的电场、磁场和利用独特的纳米线异质结构，可以使用光学和输运测量来探测这些状态。这项研究将特别针对这些材料中的自旋效应，在这些材料中，新物理和新技术都可能实现。研究生和本科生将接受最先进的光学和电子技术方面的培训，以观察单根纳米线。这样的培训是为从学术界的研究和教学到最先进的技术行业的应用开发的职业生涯做好准备的极好准备。这项研究的总体目标是促进对半导体纳米线中量子状态下的动力学过程的理解。