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

佛罗里达州立大学仪器材料研究项目授予该奖项是为了获得可变温度扫描探针显微镜系统。该仪器不仅可以用于纳米尺度的微观结构研究，还可以用于中观尺度的微观结构研究，特别是在高样品温度下，可以应用于薄膜半导体、半晶聚合物、高温超导体、超塑性和沉淀硬化材料的纳米结构。通过在热敏探针组件上添加热电偶传感器，以及修改样品安装配置以最小化被加热体积，将原子力显微镜（AFM）的温度范围能力扩展到1500 K以上的方法进行了研究。这个极大的温度范围将为FAMU-FSU工程学院的科学家们提供观察和研究超导涡旋结构、晶体重定向、织构演变、内应力发展和相变等现象的机会。从SPM中获得的信息可以用来补充其他技术获得的数据，从而扩展变形和相变微观机制的知识。表面原子排列将用于获得块状材料的纹理，即使在高温下也是如此。该仪器将用于本科和研究生水平的教学，为学生提供在材料研究前沿使用真正最先进的仪器的机会。佛罗里达州立大学的仪器材料研究项目授予该奖项是为了获得一种变温扫描探针显微镜系统。扫描探针显微镜这一相对较新的领域为动态表面的详细原子尺度研究提供了大量的机会。这项技术背后的基本原理是对针头的精确电子操作，其尖端不到人类头发直径的千分之一。只需改变针头的材料，该仪器就可以对磁场、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。这一显著的温度范围将使用户能够研究广泛的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农工大学联合管理的项目，佛罗里达农工大学是一所授予博士学位的历史悠久的黑人大学。大约50%的工科学生是少数族裔，超过25%是女性。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最先进的仪器的机会

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.***