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原子材料的原子化：畸变校正电子显微术的新纪元Understanding materials atom by atom: a new era of aberration corrected electron microscopy |
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| 课程网址: | http://videolectures.net/kolokviji_bleloch_umaba/ |
| 主讲教师: | Andrew Bleloch |
| 开课单位: | 利物浦大学 |
| 开课时间: | 信息不详。欢迎您在右侧留言补充。 |
| 课程语种: | 英语 |
| 中文简介: |  |
| 课程简介: | The microscope is one of the oldest tools used by scientists to extend the reach of their senses. Since the world around us, both natural and synthetic, is made up of atoms, a microscope capable of showing us which atoms are where, arguably, gives a complete characterisation of that world. The electron microscope was, until the middle of the 1990’s, hampered by the poor quality of charged particle lenses. 15 years of spherical (and latterly chromatic) aberration correction has since given a crucial factor-of-two improvement in resolution so that routine atom by atom characterisation of materials is now possible. The SuperSTEM Laboratory in the UK was the first national facility to offer aberration corrected analysis of materials to the UK materials community. Case studies of the application of aberration technology, using both imaging and spectrometry, to a wide variety of materials problems ranging from the toxicity of nano-scale carbon materials through catalyst nano-particles to defects in perovskites and semiconductor interfaces will be presented. |
| 关 键 词: | 化学; 原子材料; 纳米碳材料 |
| 课程来源: | 视频讲座网 |
| 最后编审: | 2019-11-18：cwx |
| 阅读次数: | 53 |