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显微镜科学与教学知识中心

显微镜科学与教学知识中心

显微镜科学与教学知识中心

徕卡显微系统的知识库提供有关显微镜学科的科学研究和教学材料。内容旨在对显微镜初学者、有经验的显微镜操作实践者和使用显微镜的科学家在他们的日常工作和实验有所帮助。这里有探索交互式教程和应用笔记，你可以找到你需要的显微镜的基础知识以及前沿技术——快来加入徕卡显微知识社区，分享您的专业知识！
Schematic graph of the light path in a Spalt-Ultramikroskop.

Confocal and Light Sheet Imaging

Optical imaging instrumentation can magnify tiny objects, zoom in on distant stars and reveal details that are invisible to the naked eye. But it notoriously suffers from an annoying problem: the…
Leica LMD7

Consumables for Laser Microdissection

There are many different types of consumables for laser microdissection (LMD) systems. They cover a wide range of applications from basic to highly specialized, enabling scientists to choose their own…

Universal PAINT – Dynamic Super-Resolution Microscopy

Super-resolution microscopy techniques have revolutionized biology for the last ten years. With their help cellular components can now be visualized at the size of a protein. Nevertheless, imaging…

Nanoscale or Microscale Structures Formed in Polymers Containing Nanotubes Greatly Enhance the Electrical Conductivity

The excellent mechanical and electrical properties of carbon nanotubes have led to them being exploited for the creation of a new class of high performance polymer composites. Due to important…

冷冻透射电子显微镜的投入式冷冻技术：应用

低温下观察完全含水、未染色样本的透射电子显微镜（cryo TEM）是结构生物学、细胞生物学、药理学和其他科学分支的通用工具。通过将标本放入冷冻剂中进行超快速冷冻（投入式冻结）是一种常用的方法，用于制备在透射电镜观察的各种标本。本文是对投入式冷冻的补充，介绍了在不同领域使用投入式冷冻标本的三种冷冻TEM应用。

冷冻透射电子显微镜的投入式冷冻技术：基本原理

透射电子显微镜（TEM）所需的高真空度极大地减弱了研究自然存在于水相中的标本的能力：将“湿”标本暴露在远低于水蒸汽压的压力下，将导致水相在真空中迅速沸腾，对标本的结构造成破坏性后果。因此，在常规TEM中使用了各种方法在显微观察前干燥标本——这样一个样品制备步骤，通常导致实验结果出现假象。

Video Tutorials: Filling and Assembling of Different Carriers for High-Pressure Freezing

High pressure freezing (HPF) is a cryo-fixation method primarily for biological samples, but also for a variety of non-biological materials. It is a technique that yields optimal preservation in many…

FusionOptics in Neurosurgery and Ophthalmology – for a Larger 3D Area in Focus

Neurosurgeons and ophthalmologists deal with delicate structures, deep or narow cavities and tiny structures with vitally important functions. A clear, three-dimensional view on the surgical field is…

冷冻断裂与冷冻蚀刻基础介绍

冷冻断裂是一种将冰冻样本劈裂以露出其内部结构的技术。冷冻蚀刻是指让样本表面的冰在真空中升华，以便露出原本无法观察到的断裂面细节。金属/碳复合镀膜能够实现样本在SEM（块面）或TEM（复型）中的成像，主要用于研究如细胞器、细胞膜，细胞层和乳胶。这项技术传统上用于生物学应用，但现在逐渐在物理学和材料科学中展现出重要意义。近年来，研究人员通过冷冻断裂电子显微镜，尤其是冷冻复型免疫标记（FRIL），对膜蛋…
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