ultra-high resolution scanning electron microscope (inc. energy-dispersive X-ray spectroscopy)

化学材料科学在汉诺威莱布尼茨大学的研究概况中占有关键地位，因为它是几乎所有已建立的重点--光学技术、生物医学研究、量子光学和生产技术--的纽带。最近的任命导致化学材料科学科得到持续加强。与过去相比，现在更加关注软物质、聚合物、杂化材料和胶体。相应的材料需要特殊的分析方法组合才能进行特殊的表征。因此，汉诺威莱布尼茨大学将为化学材料科学的多尺度分析技术(CfMATCH)建立一个新的核心设施。大学的概念是在一个中心实验室为研究人员提供其材料的全面表征。自然科学学院、数学和物理系和工程学院的各个研究所已经宣布了他们的需求。在大学之外，也有人对这样的核心设施感兴趣，例如考虑与汉诺威医学院合作。电子显微镜(电子显微镜)是化学材料分析的关键。因此，我们计划为cfMATCH同时购买这两种设备。扫描电子显微镜(SEM)是这里的主题，它将专门针对具有相对较高比例的有机成分的软物质所产生的需求进行优化。这通常导致低电导率，通常通过溅射镀一层金属膜来弥补，但在混合材料等复杂材料的情况下，这可能导致信息损失。因此，应该采购一种在不需要导电涂层的情况下以极高的分辨率(亚纳米范围)工作的设备，从而即使在非常低的加速电压或充电能量下也能提供最高的性能。由于许多相关材料表现出层次化的纳米结构和复杂的化学元素分布模式，利用能量色散X射线光谱(EDX)进行强大的、空间分辨的元素分析受到了极大的重视。扫描电子显微镜的具体案例包括研究(掺杂)纳米粒子的形状和元素分布，以及由后者、胶体玻璃和气凝胶、功能梯度材料、植入表面、纳米结构传感器材料、晶体的矿化过程和形貌、热电纤维和二维异质结构组装而成的颗粒基材料的拓扑结构。

Chemical materials science occupies a key position in the research profile of the Leibniz University in Hanover, as it is a link in almost all established focal points 'optical technologies', 'biomedical research', 'quantum optics' and 'production technology'. Recent appointments resulted in a sustainable strengthening of the chemical material science section. Compared to the past, there is now a stronger focus on soft matter, polymers, hybrid materials and colloids. The corresponding materials require a special combination of analytical methods for special characterization. Therefore, the Leibniz-University Hanover will establish a new core facility for the multi-scale analysis techniques for the chemical material science (cfMATCH). The concept of the university involves to provide researchers with a comprehensive characterization of their materials in one central laboratory. Various institutes in the school of natural sciences, the department for mathematics and physics and the faculty of engineering have declared their demand. There is also interest for such a core facility outside of the university, e.g. considering the cooperation with the Hanover Medical School.Electron microscopy (TEM and SEM) is pivotal for the analysis of chemical materials. Hence, we are planning a combined purchase of both devices for cfMATCH. Scanning electron microscopy (SEM), the subject here, is to be optimized specifically to the needs that arise for soft matter with a relatively high proportion of organic components constituents. This often results in low electrical conductivity, which is usually compensated for by sputter coating with a metallic film, but this can result in the loss of information in the case of complex materials such as hybrids. Therefore, a device should be procured that works with extremely high resolution (sub-nm range) without the need for a conductive coating and thus offers the highest performance even at very low acceleration voltages or charge energy. Because many of the relevant materials exhibit a hierarchical nanostructure and complex distribution patterns of chemical elements, great emphasis is put on enormously powerful, spatially resolved elemental analysis using energy-dispersive X-ray spectroscopy (EDX). Concrete cases for the SEM comprise the investigation of the shape of and element distribution in (doped) nanoparticles and the topology of particle-based materials prepared by the assembly of the latter, colloidal glasses and aerogels, functional gradient materials, implant surfaces, nanostructured sensor materials, mineralization processes and morphologies of crystals, thermoelectric fibers and 2-D heterostructures.