Quartz Crystal Microbalance Studies of Atomic-Scale Friction

20世纪80年代后期，摩擦学的基本领域重新引起了人们的兴趣，这是由一些新的实验和理论技术引起的，这些技术能够在纳米尺度上很好地定义几何形状中的摩擦力。 这是授予罗利北卡罗来纳州州立大学女性PI的个体研究者奖。 该研究项目涉及使用这样一种新技术，即石英晶体微量天平，以探讨该领域的重要关键问题，包括（1）了解滑动接触中发生的化学和摩擦化学反应，以及（2）了解原子长度和时间尺度上与摩擦相关的能量耗散机制。如果成功，该项目将产生摩擦化学反应的第一个原子级图像（通过将微量天平与扫描隧道显微镜相结合获得），并且还将提供与最近发现的超导性相关摩擦现象相关的基本能量耗散机制的理解。 一个免费的教育部分包括（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最先进的摩擦信息，以及通过讲座和书面评论向更广泛的受众传播。根据最近的估计，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，仅在美国每年就节省超过1000亿美元。因此，摩擦学领域（摩擦和磨损的研究）长期以来一直激发着工程和材料界的兴趣也就不足为奇了。20世纪80年代末尤其标志着摩擦学基础领域的复兴，这是由许多新的实验和理论技术引发的，这些技术能够研究在纳米尺度上明确定义的几何形状中的摩擦力。这是授予罗利北卡罗来纳州州立大学女性PI的个体研究者奖。 该研究项目涉及使用这样一种新技术，即石英晶体微量天平，以探讨该领域的重要关键问题。 如果成功，该项目将产生摩擦化学反应的第一个原子级图像，并将提供对最近发现的超导性依赖摩擦现象的基本理解。一个免费的教育组成部分包括（1）本科生在研究中的持续参与，以及（2）直接传播关于摩擦的最先进的信息，以指导教师制定有关该主题的课程，以及通过讲座和书面评论更广泛的受众。

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.***