Quartz Crystal Microbalance Studies of Atomic-Scale Friction

原子级摩擦的石英晶体微天平研究

• 批准号: 0072030
• 负责人: Jacqueline Krim
• 金额: $ 38.1万
• 依托单位: North Carolina State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-07-01 至 2004-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0072030&HistoricalAwards=false
• 关键词: Quartz; Crystal; Microbalance; Studies; Atomic

The late 1980's marked the advent of a renewed interest in fundamental areas of tribology, sparked by a number of new experimental and theoretical techniques capable of studying the force of friction in geometries which were well defined at the nanometer scale. This is an individual investigator award to a female PI at the North Carolina State University at Raleigh. The research project involves the use of one such new technique, namely the quartz crystal microbalance, to probe critical issues of importance to this field, including (1) understanding the chemical and tribochemical reactions which occur in a sliding contact, and (2) understanding the energy dissipation mechanisms associated with friction at atomic length and time scales. If successful, the project will yield the first atomic-scale images of tribochemical reactions (obtained by combining the microbalance with a scanning tunneling microscope), and will also provide an understanding of the basic energy dissipative mechanisms associated with the recently discovered phenomena of superconductivity-dependent friction. A complimentary educational component includes (1) ongoing participation of undergraduates in the research, and (2) direct dissemination of state-of-the-art information on friction to instructors developing curriculum on the topic, as well as to more general audiences through lectures and written reviews.%%%By most recent estimates, improved attention to friction and wear would save developed countries up to 1.6% of their gross national product, or over $100 billion annually in the U.S. alone. It is thus not surprising that the field of tribology (the study of friction and wear) has long inspired interest in the engineering and materials communities. The late 1980's particularly marked a renaissance in fundamental areas of tribology, sparked by a number of new experimental and theoretical techniques capable of studying the force of friction in geometries that were well defined at the nanometer scale. This is an individual investigator award to a female PI at the North Carolina State University at Raleigh. The reseach project involves the use of one such new technique, namely the quartz crystal microbalance, to probe critical issues of importance to this field. If successful, the project will yield the first atomic-scale images of tribochemical reactions and will also provide a basic understanding of the recently discovered phenomenon of superconductivity-dependent friction. A complimentary educational component includes (1) ongoing participation of undergraduates in the research, and (2) direct dissemination of state-of-the-art information on friction to instructors developing curriculum on the topic, as well as to more general audiences through lectures and written reviews.***

20世纪80年代末，S标志着人们对摩擦学基础领域重新产生了兴趣，许多新的实验和理论技术能够研究纳米级几何图形中的摩擦力。这是授予北卡罗来纳州立大学罗利分校一名女性私家侦探的个人调查员奖。该研究项目涉及使用一种新技术，即石英晶体微天平，来探索对该领域具有重要意义的关键问题，包括(1)了解滑动接触中发生的化学反应和摩擦化学反应，(2)了解与原子长度和时间尺度上的摩擦有关的能量耗散机制。如果成功，该项目将产生第一个原子尺度的摩擦化学反应图像(通过结合微天平和扫描隧道显微镜获得)，并将提供对与最近发现的与超导相关的摩擦现象相关的基本能量耗散机制的理解。免费教育的组成部分包括：(1)本科生持续参与研究；(2)直接向教师传播有关摩擦的最新信息，并通过讲座和书面评论向更广泛的受众传播有关摩擦的最新信息。%根据最新估计，提高对摩擦和磨损的关注将为发达国家节省高达1.6%的国民生产总值，仅在美国每年就可节省超过1000亿美元。因此，摩擦学领域(研究摩擦和磨损)长期以来一直引起工程界和材料界的兴趣也就不足为奇了。20世纪80年代末的S尤其标志着摩擦学基础领域的复兴，许多新的实验和理论技术能够研究纳米级几何图形中的摩擦力。这是授予北卡罗来纳州立大学罗利分校一名女性私家侦探的个人调查员奖。该研究项目涉及使用一种新技术，即石英晶体微天平，来探索对该领域具有重要意义的关键问题。如果成功，该项目将产生第一个原子尺度的摩擦化学反应图像，并将提供对最近发现的超导依赖摩擦现象的基本理解。免费教育部分包括(1)本科生持续参与研究，(2)直接向制定该主题课程的教师传播关于摩擦的最新信息，以及通过讲座和书面评论向更广泛的受众传播*