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Overview of Microscopy Techniques01:22

Overview of Microscopy Techniques

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The early pioneers of microscopy opened a window into the invisible world of microorganisms. In 1830, Joseph Jackson Lister created an essentially modern light microscope. The 20th century saw the development of microscopes that leveraged nonvisible light, such as fluorescence microscopy that uses an ultraviolet light source and electron microscopy that uses short-wavelength electron beams. These advances significantly improved magnification, image resolution, and contrast. By comparison, the...
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Scanning Electron Microscopy01:07

Scanning Electron Microscopy

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A scanning electron microscope (SEM) is used to study the surface features of a sample by using an electron beam that scans the sample surface in a two-dimensional manner. Typically, areas between ~1 centimeter to 5 micrometers in width can be imaged. SEM can be used to image bacteria, viruses, tissues as well as larger samples like insects. Conventional SEM gives a magnification ranging from 20X to 30,000X and spatial resolution of 50 to 100 nanometers.
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Electron Microscope Tomography and Single-particle Reconstruction01:07

Electron Microscope Tomography and Single-particle Reconstruction

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Transmission electron microscopy (TEM) can be used to determine the 3D structure of biological samples with the help of techniques such as electron microscope tomography and single-particle reconstruction. While single-particle reconstruction can examine macromolecules and macromolecular complexes in vitro conditions only, tomography permits the study of cell components or small cells in vivo.
Electron Tomography
Electron tomography can be performed either in TEM or STEM (scanning transmission...
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Atomic Force Microscopy01:08

Atomic Force Microscopy

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Atomic force microscopy (AFM) is a type of scanning probe microscopy that can analyze topographic details of various specimens like ceramics, glass, polymers, and biological samples. AFM offers over 1000 times more resolution than the optical imaging system. Images generated from AFM are three-dimensional surface profiles, offering an advantage over the flat, two-dimensional images from other imaging techniques.
The AFM Probe
The probe is regarded as the heart of any AFM setup and comprises the...
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相关实验视频

Updated: Jul 2, 2025

Characterization of Surface Modifications by White Light Interferometry: Applications in Ion Sputtering, Laser Ablation, and Tribology Experiments
11:47

Characterization of Surface Modifications by White Light Interferometry: Applications in Ion Sputtering, Laser Ablation, and Tribology Experiments

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探索表面结构的探索.

Bernhard Schuster1

  • 1Institute of Synthetic Bioarchitectures, Department of Bionanosciences, University of Natural Resources and Life Sciences, Vienna, Vienna, Austria.

eLife
|February 28, 2024
PubMed
概括
此摘要是机器生成的。

硫虫 (Sulfolobus acidocaldarius) 的表面层具有灵活而稳定的外部蛋白质结构. 这一外层与内部的膜结合蛋白质密切连接,揭示了关键的细胞架构.

关键词:
在 S 层中,硫类 (Sulfolobus) 是一种硫类.考古学是指古物质 (archaea) 是指古物质.冰冷化EMEM可以使用.分子生物物理学分子生物物理学一个粒子分析分析.结构生物学结构生物学断层扫描 (tomography) 是一个非常重要的技术.

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相关实验视频

Last Updated: Jul 2, 2025

Characterization of Surface Modifications by White Light Interferometry: Applications in Ion Sputtering, Laser Ablation, and Tribology Experiments
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科学领域:

  • 微生物学 微生物学
  • 生物化学 生物化学
  • 细胞生物学 细胞生物学

背景情况:

  • 硫虫 (Sulfolobus acidocaldarius) 是一种以其独特的细胞外而闻名的古生物.
  • 了解细胞表面对于考古生物学和生物技术至关重要.

研究的目的:

  • 为了研究Sulfolobus acidocaldarius表面层的结构组织.
  • 为了阐明外层蛋白质层与内膜结合蛋白质之间的相互作用.

主要方法:

  • 对S. acidocaldarius细胞表面的结构分析.
  • 生物化学测试以确定蛋白质相互作用.

主要成果:

  • 外表面层由一个灵活而稳定的蛋白质组合组成.
  • 确定了这种外层蛋白质层与内膜结合蛋白质之间的直接相互作用.

结论:

  • S. acidocaldarius的表面层表现出一种独特的复合结构.
  • 这种结构安排可能有助于细胞的稳定性和功能.