New EDS detector for Ultrahigh-resolution TEM

用于超高分辨率 TEM 的新型 EDS 探测器

• 批准号: 472811-2015
• 负责人: Botton, Gianluigi
• 金额: $ 10.93万
• 依托单位: McMaster University
• 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=564852
• 关键词: New; EDS; detector; Ultrahigh; resolution

We are requesting an upgrade to energy dispersive X-ray spectrometry (EDS) detector for our ultrahigh resolution Transmission Electron Microscope (UHR-TEM) purchased by McMaster University 6 years ago. This analytical attachment provides much larger detector efficiency and faster electronics than the previous detector, built on 20-year old technology, and is essential to enable the analysis of the chemical composition of samples characterized in the TEM. The much larger detector (4 times more efficient) is essential to detect the composition of smaller structures such as nanoparticles down to 1-2nm size, beam sensitive materials (such as corrosion products, Li-containing materials and biological materials) and allows much larger scale analyses due to the improved detection of X-rays and faster electronics. These characteristics will finally make EDS tomography possible, the first time in Canada. The tool, which includes software for elemental mapping and quantification, is indispensable for the identification of phases that need to be analysed, map the distribution of elements in the areas of interest so that specific areas that need to be studied can be identified. Several research groups will benefit from the requested instrument. Projects include the analysis of corrosion and oxidation in automotive and nuclear applications, photovoltaic materials, interfaces in biomaterials, fuel cells, Li-ion battery materials, coatings in battery materials, and light-emitting diodes. Without this requested instrument, this research and progress in numerous research projects will be severely limited and the research groups will not be competitive at the international level since this tool is now commonly available outside Canada.

我们要求升级能量色散X射线光谱仪（EDS）检测器，用于6年前由麦克马斯特大学购买的100倍分辨率透射电子显微镜（UHR-TEM）。 该分析附件提供了比以前的探测器更大的探测器效率和更快的电子设备，建立在20年的技术基础上，并且对于能够分析TEM中表征的样品的化学成分至关重要。 更大的探测器（效率提高4倍）对于探测更小结构的组成至关重要，例如尺寸小至1-2nm的纳米颗粒、光束敏感材料（例如腐蚀产物、含锂材料和生物材料），并且由于X射线检测的改进和更快的电子设备，可以进行更大规模的分析。这些特性最终将使EDS层析成像成为可能，这在加拿大尚属首次。该工具包括元素绘图和量化软件，对于确定需要分析的相、绘制感兴趣区域的元素分布图以便确定需要研究的具体区域不可或缺。若干研究小组将受益于所要求的文书。项目包括分析汽车和核应用中的腐蚀和氧化、光伏材料、生物材料界面、燃料电池、锂离子电池材料、电池材料涂层和发光二极管。如果没有这一所要求的工具，许多研究项目的研究和进展将受到严重限制，研究小组在国际一级将没有竞争力，因为这一工具现在在加拿大以外普遍存在。