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
From Bench to Beam: A Complete Correlative Cryo Light Microscopy Workflow
In the webinar entitled "A Multimodal Vitreous Crusade, a Cryo Correlative Workflow from Bench to Beam" a team of experts discusses the exciting world of correlative workflows for structural biology…
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先进的细胞超微结构研究
冷冻断裂和冷冻蚀刻是研究柔性膜相关结构(如紧密连接或肠道糖萼)的有用工具。冷冻断裂和冷冻蚀刻是两种互补的方法,通过样品玻璃化来保护目标结构,然后断开冷冻标本以揭示内部结构。冷冻蚀刻是一个后续步骤,在真空下表面冰升华以揭示更多细节。在这些技术中,喷镀金属或碳使样品能够直接在冷冻扫描电子显微镜(SEM)中成像,或作为复制膜在透射电子显微镜(TEM)中成像。这对技术用于研究细胞器、膜、层和乳液,特别适用…
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Exploring the Structure and Life Cycle of Viruses
The SARS-CoV-2 outbreak started in late December 2019 and has since reached a global pandemic, leading to a worldwide battle against COVID-19. The ever-evolving electron microscopy methods offer a…
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Workflows and Instrumentation for Cryo-electron Microscopy
Cryo-electron microscopy is an increasingly popular modality to study the structures of macromolecular complexes and has enabled numerous new insights in cell biology. In recent years, cryo-electron…
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研究天然聚合物精细细节的微观结构
本报告评估了结合使用冷冻宽幅离子束铣削和扫描电子显微镜(cryo-BIB-SEM)对低温稳定柔性聚合物的微观结构进行成像和分析的潜能。报告介绍了使用cryo-BIB-SEM对易损天然聚合物进行检查的结果,例如番茄果皮和木材,还分析了聚合物表面形态和多种微观结构特性。
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页岩和碳酸盐岩的宏观至纳米级孔隙分析
页岩和碳酸盐岩等岩石的物理孔隙度对其储存能力有很大影响。孔隙的几何形状也会影响其渗透率。对可见孔隙空间进行成像,有助于了解物理孔隙空间、孔隙几何形状以及与储存和运输相关的矿物和有机物质阶段。
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DNA分子的可视化
在透射电子显微镜(TEM)中可以使用重金属(如铂)精确的低角度旋转阴影来观察之前在薄的、低晶粒和电子透明的碳膜上吸收的物体的分子细节。
为了达到最高的对比度和更好的图像质量,涂层具有方向性至关重要,它是以精确的角度向样品给出的。金属层的细晶粒和涂层材料在样品表面的均匀厚度也是实现高质量TEM图像的关键要求。这需要电子束蒸发方法,尚无替代涂层技术能够实现相当的结果。电子束蒸发产生的蒸发材料流是非常…
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利用直流磁控溅射镀膜仪改进HR-SEM用金属薄膜
制备技术(诸如使用各种涂层方法)在高分辨率扫描电子显微镜(HR-SEM)中起着重要作用。对于生物和合成样品等非导电样品,必须制备薄导电层以防止荷电。