Scanning Probe Microscopy for Materials Research

用于材料研究的扫描探针显微镜

• 批准号: 9221781
• 负责人: Paul Hansma
• 金额: $ 34.5万
• 依托单位: University of California-Santa Barbara
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-02-01 至 1997-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9221781&HistoricalAwards=false
• 关键词: Scanning; Probe; Microscopy; Materials; Research

Fundamental materials research is proposed with scanning probe microscopes: 1) crystal growth and etching will be observed in real-time as they occur at liquid-solid interfaces for detailed comparison with theoretical models, 2) the imaging of molecular crystals and other soft materials will be investigated and improved by focusing on static and dynamic probe-surface interactions, and 3) the development of new scanning probe microscopes for materials research will be continued with special emphasis on new techniques for imaging ultra-fast processes. %%% Scanning probe microscopes, in particular the Atomic Force Microscope, are evolving into powerful tools for materials research. They can image processes involved in the formation of materials at unprecedented resolution. They can image these processes as they occur in many cases. Commercially available microscopes can already do many jobs in materials research and are finding there way into more and more materials research laboratories. This research is focused on pushing the frontiers and developing new microscopes and new methodologies for handling more and more problems and finding solutions that are impossible with current instrumentation. For example, the possibility of getting ultra-fast time resolution to study fast processes such as magnetic domain wall motion will be explored. As another example, fundamental research on the imaging of soft materials is proposed. Soft materials are hard to image for currently available microscopes because the tips can deform them. Though much progress has been made, more remains to be done. Microscopes can now image some soft surfaces but they have a hard time imaging polymers weakly attached to surfaces or processes involving aggregation of polymer chains. The long term goal is the creation of better materials as the result of fundamental studies done on the formation of materials with new microscopes and new ways to operate those new microscopes.

提出利用扫描探针显微镜进行基础材料研究：1）实时观察液固界面处发生的晶体生长和蚀刻，以便与理论模型进行详细比较；2）通过关注静态和动态探针与表面相互作用来研究和改进分子晶体和其他软材料的成像；3）将继续开发用于材料研究的新型扫描探针显微镜 特别强调用于超快过程成像的新技术。 %%% 扫描探针显微镜，特别是原子力显微镜，正在发展成为材料研究的强大工具。 他们可以以前所未有的分辨率对材料形成过程进行成像。 他们可以想象这些过程在许多情况下发生的情况。 商用显微镜已经可以在材料研究中完成许多工作，并且正在进入越来越多的材料研究实验室。 这项研究的重点是推动前沿发展并开发新的显微镜和新方法来处理越来越多的问题并找到当前仪器无法实现的解决方案。 例如，将探索获得超快时间分辨率来研究磁畴壁运动等快速过程的可能性。 另一个例子，提出了软材料成像的基础研究。 目前可用的显微镜​​很难对软材料成像，因为尖端会使它们变形。 尽管已经取得了很大进展，但仍有更多工作要做。 显微镜现在可以对一些柔软的表面进行成像，但它们很难对弱附着在表面上的聚合物或涉及聚合物链聚集的过程进行成像。 长期目标是通过使用新显微镜和操作这些新显微镜的新方法对材料形成进行基础研究来创造更好的材料。