IMR: Acquisition of a Scanning Probe Microscope for Investigating Fundamental Interactions between Surfaces and Student Training

IMR：购买扫描探针显微镜来研究表面和学生培训之间的基本相互作用

• 批准号: 0414595
• 负责人: Ho Bun Chan
• 金额: --
• 依托单位: University of Florida
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-09-01 至 2006-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0414595&HistoricalAwards=false
• 关键词: IMR; Acquisition; Scanning; Probe; Microscope

This IMR award supports the acquisition of a scanning probe microscope (SPM) operating in vacuum of 10-7 torr. Acquisition of the SPM will create the infrastructure to perform a series of experiments to investigate the fundamental interactions between surfaces with separations at the nanometer scale, including Casimir forces and non-contact friction. The vacuum environment, in combination with custom alterations to the sample chamber, will enable the operation of microelectromechanical devices simultaneously with the scanning head in the environmental chamber. The approach and distance feedback mechanism of the SPM head will be utilized in the measurement of the Casimir force using a microelectromechanical oscillator. The SPM will also be used to characterize surface imperfections, including the spatial mapping of surface potential and roughness. Such a complete characterization of the surface is essential in the fundamental test of the theory of Casimir forces. In addition to Casimir force measurements, the SPM will also be used to investigate novel non-conservative effects when closely spaced objects are in relative motion. Students participating in the experiments will acquire invaluable experience in scanning probe microscopy and in the design, fabrication and operation of microelectromechanical devices.This IMR award supports the acquisition of a scanning probe microscope (SPM) operating in vacuum of 10-7 torr. Acquisition of the SPM will create the infrastructure to perform a series of experiments to investigate the fundamental interactions between surfaces with separations at the nanometer scale, including Casimir forces and non-contact friction. The vacuum environment, in combination with custom alterations to the sample chamber, minimizes viscous damping and enables the operation of microelectromechanical devices simultaneously with the scanning head. One of the areas to be pursued with the SPM is the study of Casimir forces. The Casimir effect is the attraction between two neutral metallic surfaces arising from the quantum fluctuations of the electromagnetic field. The approach and distance feedback mechanism of the SPM head will be utilized in the measurement of the Casimir force using a microelectromechanical oscillator. Even though the Casimir force has been experimentally verified by a number of experimental teams, surface imperfections introduce non-negligible corrections to the Casimir force. The SPM will be used to characterize and optimize various surface imperfections. In addition to Casimir force measurements, the SPM will also be used to investigate novel non-conservative effects when closely spaced objects are in relative motion. Students participating in the experiments will acquire invaluable experience in scanning probe microscopy and in the design, fabrication and operation of microelectromechanical devices.

该IMR奖支持购买在10-7托真空中工作的扫描探针显微镜(SPM)。收购SPM将建立基础设施，以执行一系列实验，以研究纳米级分离表面之间的基本相互作用，包括卡西米尔力和非接触摩擦。真空环境与样品室的定制更改相结合，将使微电子机械设备能够与环境室中的扫描头同时运行。采用微机械振荡器测量Casimir力时，将利用SPM头的接近和距离反馈机制。SPM还将用于表征表面缺陷，包括表面电势和粗糙度的空间映射。在卡西米尔力理论的基本检验中，这种对表面的完整表征是必不可少的。除了卡西米尔力测量，扫描探针显微镜还将用于研究近距离物体相对运动时的新的非保守效应。参加实验的学生将获得在扫描探针显微镜以及微电子机械设备的设计、制造和操作方面的宝贵经验。该IMR奖支持购买在10-7Torr真空中运行的扫描探针显微镜(SPM)。收购SPM将建立基础设施，以执行一系列实验，以研究纳米级分离表面之间的基本相互作用，包括卡西米尔力和非接触摩擦。真空环境与样品室的定制更改相结合，最大限度地减少了粘性阻尼，并使微型机电设备能够与扫描头同时运行。南方共同市场要进行的领域之一是研究卡西米尔部队。卡西米尔效应是由电磁场的量子涨落引起的两个中性金属表面之间的吸引。采用微机械振荡器测量Casimir力时，将利用SPM头的接近和距离反馈机制。尽管卡西米尔力已经被一些实验团队进行了实验验证，但表面缺陷对卡西米尔力的修正是不可忽视的。扫描探针显微镜将用于表征和优化各种表面缺陷。除了卡西米尔力测量，扫描探针显微镜还将用于研究近距离物体相对运动时的新的非保守效应。参加实验的学生将在扫描探针显微镜和微电子机械设备的设计、制造和操作方面获得宝贵的经验。