Collaborative Research: Atomic-Scale Study of Friction for Nano-Electromechanical Structures

合作研究：纳米机电结构摩擦的原子尺度研究

• 批准号: 0725521
• 负责人: Scott Paulson
• 金额: $ 6万
• 依托单位: James Madison University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-08-01 至 2010-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0725521&HistoricalAwards=false
• 关键词: Collaborative; Research; Atomic; Scale; Study

Washburn and PaulsonThe objective of this research is to understand friction at the atomic and mesoscopic scales. At this level friction is poorly understood, though as mechanical and electromechanical devices shrink, the effects of friction become dominant. The approach is to combine sensitive frictional force measurements with state of the art microscopy and diffraction techniques capable of determining the positions of individual atoms on both surfaces.Intellectual merit: For decades technology has relied on the further miniaturization of electrical and mechanical systems. At nanometer size scales currently attainable by state of the art fabrication techniques, friction (andstiction) is orders of magnitude larger than forces such as gravity. A fundamental understanding of friction at the nanometer length scale is crucial to design and engineering in future nanoscale technologies. Carbon nanotubes will be used as model surfaces nearly free of dangling bonds and defects, and will provide data to compare with theoretical and computational models.Broader Impact: Beyond the scientific impact of the work, the results of the study will underpin future technological advances toward electromechanical devices in the workplace as sensors, etc. Device structures in this work should provide testbeds for the next generation of nanometer electrical and mechanical devices. A separate beneficial "side-effect" of this work will be to launch the next generation of scientists. The increased participation of under-represented groups at UNC will ripple through the future of the society.

这项研究的目的是了解原子和介观尺度上的摩擦。在这个层面上，人们对摩擦知之甚少，尽管随着机械和机电设备的收缩，摩擦的影响成为主导。该方法是将敏感的摩擦力测量与能够确定两个表面上单个原子位置的最先进的显微镜和衍射技术相结合。智力优势：几十年来，技术一直依赖于电气和机械系统的进一步小型化。以目前先进的制造技术所能达到的纳米尺度，摩擦（和阻力）比重力等力大几个数量级。对纳米尺度摩擦的基本理解对于未来纳米尺度技术的设计和工程至关重要。碳纳米管将用作几乎没有悬空键和缺陷的模型表面，并将提供与理论和计算模型进行比较的数据。更广泛的影响：除了这项工作的科学影响之外，这项研究的结果将为未来工作场所机电设备（如传感器等）的技术进步奠定基础。本研究的器件结构为下一代纳米机电器件提供了实验平台。这项工作的另一个有益的“副作用”将是培养下一代科学家。北卡罗来纳大学中代表性不足的群体的更多参与将影响整个社会的未来。