VERSATILE ULTRAFAST ELECTRON DIFFRACTION SETUP

多功能超快电子衍射装置

• 批准号: 472428-2015
• 负责人: Sciaini, AlbertoGerman
• 金额: $ 10.93万
• 依托单位: University of Waterloo
• 依托单位国家: 加拿大
• 项目类别: Research Tools and Instruments - Category 1 (<$150,000)
• 财政年份: 2014
• 资助国家: 加拿大
• 起止时间: 2014-01-01 至 2015-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=564750
• 关键词: VERSATILE; ULTRAFAST; ELECTRON; DIFFRACTION; SETUP

Ultrafast lasers provided the "first light" in sufficiently short pulses to monitor atomic motion on the relevant timescales; below a millionth of a millionth of a second, to literally catch atoms on the fly as in stop-motion photography. However, the spatial resolution in optical microscopy is limited to about the size of a big virus. This is about ten thousand times too coarse to observe the molecular structure at its finest detail, down to its fundamental building blocks - atoms.

超快激光器以足够短的脉冲提供“第一束光”，以监测相关时间尺度上的原子运动；低于百万分之一秒，可以像定格摄影一样捕捉飞行中的原子。然而，光学显微镜的空间分辨率仅限于大病毒的大小。这大约是粗略一万倍，无法观察分子结构的最精细细节，直至其基本组成部分——原子。