"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****半导体纳米线最近已成为一种新的材料类别，具有巨大的潜力，可以提高对基本物理学的理解和设备物理学的新应用。该项目将在最先进的半导体纳米线增长，建模这些结构以及独特的激发光谱中汇集专业知识，以促进对直径为量子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增长；开发新的光学工具来测量量子状态及其相互作用；使用这些新工具研究量子制度中的纳米线异质结构；采用高度局部的电场来操纵和探测纳米线异质结构中的电子状态；进行光学和运输测量；并探索这些纳米线异质结构中的自旋动力学。通过设计，生长和探测纳米线径向和轴向异质结构，其长度尺度从5 nm -50 nm，我们将访问这些材料中真正的量子状态。研究生和本科生将接受最先进技术的培训，这是从学术界的研究和教育到技术先进行业的应用开发研究的绝佳准备。这项研究的目的是促进量子制度中半导体纳米线中动态过程的理解。****非技术摘要****半导体纳米线最近已成为具有重要潜力的新材料类别的新材料。了解基本物理和用于设备物理学的新应用。该项目中的研究将汇集到最先进的半导体纳米线增长，对这些结构建模以及实验性努力的专业知识，以提高对直径小于50 nm的半导体纳米线（1/1000）的理解（1/1000人头发的直径），材料本身与电子波长的大小相当的范围。当可以设计合成材料以控制电子波函数时，可以预期出色的现象和新的技术机会。 可以通过使用高度局部的电场，磁场以及利用独特的纳米线异质结构来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新物理和新技术的材料中旋转的作用。 研究生和本科生将接受最先进的光学和电子技术培训，以查看单纳米线。 这种培训是从学术界的研究和教学到最先进的行业的应用发展的绝佳准备。 这项研究的总体目标是提高对量子状态中半导体纳米线中动态过程的理解