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: 1105362
• 负责人: Leigh Smith
• 金额: $ 34.59万
• 依托单位: University of Cincinnati Main Campus
• 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 2015-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1105362&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 research 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 utilizing these new tools; employ highly localized electric fields to manipulate and probe the electronic states in the nanowire heterostructures; carry out both 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 have access to the truly quantum regime in these materials. Both graduate and undergraduate students will be trained in these state-of-the-art techniques, which are an excellent preparation for careers ranging from research and education in academia, to applied development research 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.****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型材料出现，在增进对基础物理的理解和器件物理的新应用方面具有巨大潜力。该研究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，以增进对直径处于量子范围内的半导体纳米线动力学特性的理解。 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；开发新的光学工具来测量量子态及其相互作用；利用这些新工具研究量子态中的纳米线异质结构；采用高度局域化的电场来操纵和探测纳米线异质结构中的电子态；进行光学和传输测量；并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为 5 nm - 50 nm 的纳米线径向和轴向异质结构，我们将能够获得这些材料中真正的量子状态。 研究生和本科生都将接受这些最先进技术的培训，这为从学术界的研究和教育到技术最先进的行业的应用开发研究等职业做好了良好的准备。 这项研究的总体目标是增进对量子态下半导体纳米线动力学过程的理解。****非技术摘要****半导体纳米线最近作为一类新型材料出现，具有巨大的应用潜力促进对基础物理和器件物理新应用的理解。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工作方面的专业知识，以增进对直径小于 50 nm（1/1000人类头发直径），在这个范围内材料本身可与电子波长的大小相媲美。当可以设计合成材料来控制电子波函数时，预计会出现显着的现象和新的技术机会。 通过使用高度局域化的电场、磁场和利用独特的纳米线异质结构，可以使用光学和传输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，其中可能启用新物理和新技术。 研究生和本科生将接受最先进的光学和电子技术的培训，以观察单纳米线。 此类培训为从学术界的研究和教学到技术最先进的行业的应用开发等职业做好了良好的准备。 这项研究的总体目标是增进对量子态下半导体纳米线动力学过程的理解