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相关概念视频

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
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Super-resolution fluorescence microscopy (SRFM) provides a better resolution than conventional fluorescence microscopy by reducing the point spread function (PSF). PSF is the light intensity distribution from a point that causes it to appear blurred. Due to PSF, each fluorescing point appears bigger than its actual size, and it is the PSF interference of nearby fluorophores that causes the blurred image. Various approaches to achieving higher resolution through SRFM have recently been...
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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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Optical microscopy uses optic principles to provide detailed images of samples. Antonie van Leeuwenhoek designed the first compound optical microscope in the 17th century to visualize blood cells, bacteria, and yeast cells. In 1830, Joseph Jackson Lister created an essentially modern light microscope. The 20th century saw the development of microscopes with enhanced magnification and resolution.
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Confocal microscopy is an advanced microscopic technique. The prime advantage of the confocal microscope over other microscopy techniques is its ability to block the out-of-focus light from the illuminated samples using pinholes. It is widely used with fluorescence optics to obtain high-resolution, sharp contrast images. Unlike optical microscopes, confocal microscopes use a focused beam of light laser to scan the entire sample surface at different z-planes. These microscopes are, therefore,...
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相关实验视频

Updated: Jun 26, 2025

Sub-nanometer Resolution Imaging with Amplitude-modulation Atomic Force Microscopy in Liquid
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原子长度尺度上的全光学子循环显微镜

T Siday1, J Hayes1, F Schiegl1

  • 1Department of Physics and Regensburg Center for Ultrafast Nanoscopy (RUN), University of Regensburg, Regensburg, Germany.

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此摘要是机器生成的。

研究人员开发了一种新的光学显微镜技术, 这一突破允许在原子层面直接观察量子光物相互作用和电子动力学.

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科学领域:

  • 凝聚物质物理
  • 量子光学
  • 纳米技术

背景情况:

  • 光学显微镜的目的是实现研究纳米级动态的原子分辨率.
  • 超分辨率和近场显微镜的分辨率有所提高,但受到尖端大小的限制.
  • 了解量子光物质相互作用需要具有极高时空精度的工具.

研究的目的:

  • 开发一种全光学显微镜技术,具有图度空间和秒时间分辨率.
  • 探索极端的原子非线性, 以提高成像能力.
  • 在原子尺度上直接监测超快的电子动态.

主要方法:

  • 极端的原子非线性在尖端封闭的 evanescent 领域的利用.
  • 使用非传统的近场响应与特定的光学相位延迟.
  • 应用该技术对纳米尺度缺陷进行成像和采样电流流动.

主要成果:

  • 在光学显微镜中实现了图度空间和秒时间分辨率.
  • 发现了一个有效的,非经典的近场反应,
  • 通过原子力显微镜成功成像了不可见的缺陷, 并采集了超快速电流的样本.

结论:

  • 这种技术将光学显微镜推向前所未有的时空尺度.
  • 允许直接访问量子光物质相互作用和量子材料中的电子动态.
  • 在导电和绝缘材料中研究纳米尺度现象的新途径.