Physics of Ultra Small Structures

超小型结构物理学

• 批准号: 9970708
• 负责人: Nicholas Giordano
• 金额: $ 58.22万
• 依托单位: Purdue Research Foundation
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-04-01 至 2004-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9970708&HistoricalAwards=false
• 关键词: Physics; Ultra; Small; Structures

9970708GiordanoThe behavior of several different types of ultra-small condensed matter systems will be investigated. One set of experiments will study electronic motion in metals such as the behavior of magnetic impurities in small metal systems, the electrical resistance of magnetic domains and domain walls in very narrow ferromagnetic wires, and electron phase coherence times at very low temperatures. A second body of work will investigate the motion of fluids in very small structures. New methods for the fabrication of fluid "containers" as small as a few hundred angstroms on a side will be developed to obtain information on the nature of viscous flow at extremely short length scales. The central theme of this work is the use of ultra-small structures as tools with which to study fundamental issues in condensed matter physics.%%%This project will study several different types of ultra-small systems. One set of experiments will explore electronic motion in metals, with particular attention to how this motion is affected by the magnetic properties of the metal. Another body of work will develop new methods for the fabrication of fluid "containers" as small as a hundred atomic diameters on a side. These will be used to investigate atomistic effects on the flow of simple fluids. The central theme of this work is the use of ultra-small structures as tools with which to study fundamental issues in condensed matter physics.***

9970708Giordano几种不同类型的超小凝聚态系统的行为将被研究。 其中一组实验将研究金属中的电子运动，例如小型金属系统中磁性杂质的行为，非常窄的铁磁线中磁畴和畴壁的电阻，以及非常低温度下的电子相位相干时间。第二部分工作将研究非常小的结构中流体的运动。将开发制造一面小到几百埃的流体“容器”的新方法，以获得关于极短长度尺度下粘性流性质的信息。这项工作的中心主题是使用超小结构作为研究凝聚态物理学基本问题的工具。该项目将研究几种不同类型的超小型系统。 其中一组实验将探索金属中的电子运动，特别关注这种运动如何受到金属磁性的影响。另一项工作将开发新的方法来制造流体“容器”，其尺寸小到一面有100个原子直径。 这些将被用来研究原子对简单流体流动的影响。这项工作的中心主题是使用超小结构作为研究凝聚态物理学基本问题的工具。