Acquisition of a Variable-Temperature Scanning Probe Microscope System for Materials Research and Education

采购用于材料研究和教育的变温扫描探针显微镜系统

• 批准号: 0076485
• 负责人: Rufina Alamo
• 金额: $ 13万
• 依托单位: Florida State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-08-15 至 2003-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0076485&HistoricalAwards=false
• 关键词: Acquisition; Variable; Temperature; Scanning; Probe

This award from the Instrumentation materials Research program to Florida State University is for the acquisition of a variable-temperature scanning probe microscope system. The instrument will be used for studying microstructures not only at the nano-scale but also on the meso-scale, particularly at high sample temperatures, with applications in thin film semiconductors, semi-crystalline polymers, high-temperature superconductors, and nanostructures of superplastic and precipitation hardening materials. Methods to extend the temperature range capability of atomic force microscopy (AFM) to temperatures in excess of 1500 K will be investigated by the addition of thermocouple sensors on the heat-sensitive probe assemblies, and modification of the sample mounting configuration to minimize the volume being heated. This extremely large temperature range will provide scientists from FAMU-FSU College of Engineering with the opportunity to observe and investigate in-situ such phenomena as superconductor vortex structures, crystal reorientation, texture evolution, internal stress development and phase transformation. The information obtained from SPM may be used to complement the data acquired with other techniques, and thereby expand knowledge of the micromechanisms of deformation and phase transformation. The surface atomic arrangement will be used to obtain texture in bulk materials, even at high temperatures. The instrument will be used for instruction at both the undergraduate and graduate level, providing the opportunity for students to work with a truly state-of-the-art instrument at the forefront of materials research.%%%This award from the Instrumentation materials Research program to Florida State University is for the acquisition of a variable-temperature scanning probe microscope system. The relatively new field of scanning probe microscopy has opened up an enormous number of opportunities for detailed atomic-scale study of dynamic surfaces. The fundamental principle behind the technique is the precision electrical manipulation of a needle probe whose tip is less than one-thousandth the diameter of a human hair. Simply by changing the material of the needle probe, the instrument can be converted to respond to differences in magnetic field, temperature, electron density and even chemical reactivity- all on the atomic scale. This instrument is capable of performing measurements on samples over the temperature range of 25 degrees above absolute zero, to over 1500 degrees. This remarkable temperature range will enable users to investigate a wide range of surface phenomena and material properties, including high temperature superconductors, shape-memory metallic alloys, high-purity semiconductors, and novel types of polymer materials. The instrument will be maintained by the FAMU-FSU College of Engineering, a jointly managed program of Florida State University, and Florida A&M University, a Doctoral-granting historically black university. Approximately 50% of the engineering students are minorities, and over 25% are women. The instrument will be used for instruction at both the undergraduate and graduate level, providing the opportunity for students to work with a truly state-of-the-art instrument at the forefront of materials research.***

该奖项从仪器材料研究计划佛罗里达州立大学是为收购一个可变温度扫描探针显微镜系统。该仪器将用于研究微观结构，不仅在纳米尺度上，而且在介观尺度上，特别是在高样品温度下，在薄膜半导体，半结晶聚合物，高温超导体和超塑性和沉淀硬化材料的纳米结构中的应用。方法，以延长原子力显微镜（AFM）的温度范围的能力，超过1500 K的温度将通过增加热电偶传感器的热敏探针组件，和修改的样品安装配置，以尽量减少被加热的体积进行调查。 这一极大的温度范围将为FAMU-FSU工程学院的科学家提供观察和研究现场现象的机会，如超导体涡旋结构，晶体重定向，织构演化，内应力发展和相变。从SPM获得的信息可以用来补充与其他技术获得的数据，从而扩大变形和相变的微观机制的知识。 表面原子排列将用于获得块状材料的织构，即使在高温下。该仪器将用于本科和研究生阶段的教学，为学生提供在材料研究前沿使用真正先进仪器的机会。%该奖项从仪器材料研究计划佛罗里达州立大学是为收购一个可变温度扫描探针显微镜系统。相对较新的领域扫描探针显微镜开辟了大量的机会，详细的原子尺度的动态表面的研究。 这项技术背后的基本原理是对针尖直径小于人类头发直径千分之一的探针进行精确的电子操作。只需改变探针的材料，仪器就可以转换为对磁场，温度，电子密度甚至化学反应性的差异做出反应-所有这些都在原子尺度上。 该仪器能够在绝对零度以上25度至1500度以上的温度范围内对样品进行测量。这一卓越的温度范围将使用户能够研究各种表面现象和材料特性，包括高温超导体、形状记忆金属合金、高纯度半导体和新型聚合物材料。 该仪器将由FAMU-FSU工程学院维护，该学院是佛罗里达州立大学和佛罗里达A M大学的联合管理项目，该大学是一所授予博士学位的历史悠久的黑人大学。 大约50%的工科学生是少数民族，25%以上是妇女。该仪器将用于本科和研究生阶段的教学，为学生提供在材料研究前沿使用真正先进仪器的机会。