Physics of electron microscopy and its applications

随着纳米科学的日益重要，新型纳米材料的发展以及在接近原子分辨率上理解材料和工艺的愿望的增加，电子显微镜的重要性也在增加。电子显微镜提供的定量信息低于个位数纳米长度尺度取代了我们的感官在该尺度。尖端的电子显微镜为获得最新电子显微镜的合作者带来了竞争优势。阿尔伯塔大学和国家纳米技术研究所的电子显微镜研究项目专注于电子显微镜的开发，该项目可以为实际的、辐射敏感的样品提供定量数据。为了提高我们的分析能力，我们开发了电子能量损失谱，电子全息和泽尼克相位板成像的电子，电子断层扫描和纳米束衍射的物理基础。许多工业和学术合作伙伴受益于我们实验室开发的专业知识。我们不断吸引来自世界各地顶尖实验室的合作，进一步加强了我们实验室的声誉。我们与日立和JEOL合作，将我们的研究成果商业化，引领加拿大的产品制造和财富创造。与仪器制造商的共同努力确保我们的仪器不断提供最先进的功能。它向学生介绍精密仪器的开发。我的大部分研究项目是由国家研究委员会资助的。该发现基金提供两个博士生培训机会。学生们将对电子显微镜的探索性科学方面进行研究。他们将在两个高影响领域工作：透射电子显微镜中的动量分解电子能量损失光谱和适用于电子辐照损伤和透射电子显微镜中的相板成像的静电充电现象的研究。他们将与我们实验室的研究人员互动，并将有很多机会与日立和JEOL的合作研究人员和工程师互动。这些互动将为他们提供在整个科学生涯中受益的联系。我们开发的新方法的应用将继续与来自世界各地的领先研究人员合作。我们的电子能量损失谱的实现已经被证明是光学超材料分析的一个关键因素。我们开发的相位板成像是一种改变游戏规则的方法，应用范围从纳米磁性样品到人类健康应用的生物样品

The importance of electron microscopy increases with the increasing importance of nanoscience, development of new nanomaterials and the desire to understand materials and processes on nearly atomic resolution. Electron microscopy provides quantitative information below single digit nanometer length scale replacing our senses at that scale. Cutting edge electron microscopy brings competitive advantage to collaborators with access to the newest electron microscopy. The electron microscopy research program at U of Alberta and the National Institute for Nanotechnology is focused on development of electron microscopy that can provide quantitative data on practical, radiation sensitive, samples. To improve our analytical capabilities, we develop physics underlying electron energy loss spectroscopy, electron holography and Zernike phase plate imaging with electrons, electron tomography and nano-beam diffraction. Many industrial and academic collaborators benefit from the expertize developed in our lab. We continuously attract collaborations from top laboratories around the world further strengthening the reputation of our laboratory. We commercialize the outcomes of our research in collaboration with Hitachi and JEOL leading to product manufacturing and wealth generation in Canada. The joint effort with the instrument manufacturers ensures that our instrumentation continuously offers state-of-the-art capabilities. It introduces students on sophisticated instrument development. Majority of my research program is funded by National Research Council. This Discovery Grant enables two PhD student training opportunities. The students will conduct research on the exploratory science aspect of electron microscopy. They will work in two high impact areas: momentum resolved electron energy loss spectroscopy in a transmission electron microscope and on investigation of electrostatic charging phenomena as applicable to electron irradiation damage and phase plate imaging in a transmission electron microscope. They will interact with research staff in our laboratory and will have many opportunities to interact with collaborating researchers and engineers from Hitachi and JEOL. The interactions will provide them with connections that will benefit them throughout their scientific career. The applications of the new methods we develop will continue to be pursued in collaborations with leading researchers from around the world. Our implementation of electron energy loss spectroscopy already proved to be a critical factor in analysis of optical metamaterials. The phase plate imaging we developed is a game changing approach with application ranging from nanomagnetism samples to bio samples for human health applications.**