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Related Concept Videos

Overview of Electron Microscopy01:25

Overview of Electron Microscopy

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The wavelengths of visible light ultimately limit the maximum theoretical resolution of images created by light microscopes. Most light microscopes can only magnify 1000X, and a few can magnify up to 1500X. Electrons, like electromagnetic radiation, can behave like waves, but with wavelengths of 0.005 nm, they produce significantly greater resolution up to 0.05 nm as compared to 500 nm for visible light. An electron microscope (EM) can create a sharp image that is magnified up to 2,000,000X.
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Super-resolution Fluorescence Microscopy01:37

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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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Overview of Microscopy Techniques01:22

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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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Imaging Biological Samples with Optical Microscopy01:18

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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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Two-Dimensional Microscopy in Microbiology01:29

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Two-dimensional (2D) microscopy encompasses a range of optical techniques that capture images within a single focal plane, offering detailed representations of microscopic structures. These techniques are essential in biological and medical research, enabling the visualization of cellular and subcellular structures with different levels of contrast and specificity.There are several major types of 2D microscopy, each with strengths and applications.Bright-Field MicroscopyBright-field microscopy...
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Three-Dimensional Microscopy in Microbiology01:28

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Three-dimensional imaging techniques are essential in cell biology, allowing researchers to visualize intricate cellular structures with high resolution. Two prominent methods, Differential Interference Contrast Microscopy (DIC) and Confocal Scanning Laser Microscopy (CSLM), provide distinct advantages for imaging live and thick specimens, respectively.Differential Interference Contrast MicroscopyDIC microscopy enhances contrast in transparent, unstained samples by converting phase...
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Related Experiment Video

Updated: Apr 27, 2026

Serial Block-Face Scanning Electron Microscopy SBF-SEM of Biological Tissue Samples
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STED microscopy: increased resolution for medical research?

H Blom1, H Brismar

  • 1Science for Life Laboratory, Royal Institute of Technology, Stockholm, Sweden.

Journal of Internal Medicine
|July 2, 2014
PubMed
Summary
This summary is machine-generated.

Stimulated emission depletion (STED) microscopy overcomes the diffraction limit, enabling nanoscale visualization of cellular structures. This advanced optical imaging technique allows for reinvestigation of previous findings and generation of novel biomedical insights.

Keywords:
STEDfluorescencenanoscale imagingstimulated emission depletion microscopysuper-resolution

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Area of Science:

  • Life science
  • Biomedical science
  • Optical imaging

Background:

  • Confocal and two-photon fluorescence microscopy visualize dynamic cellular structures but are limited by diffraction.
  • Classical optical methods lack the resolution to visualize the cellular microcosmos.

Purpose of the Study:

  • Highlight developments and applications of STED microscopy.
  • Demonstrate STED microscopy's impact on resolving biomedical issues.
  • Showcase STED microscopy's potential for nanoscale visualization.

Main Methods:

  • Stimulated emission depletion (STED) microscopy.
  • Targeted on/off switching of fluorescence.
  • Sequential imaging of individual-labelled biomolecules.

Main Results:

  • STED microscopy surpasses the diffraction-limited resolution barrier.
  • Achieves significantly sharper images compared to classical methods.
  • Enables visualization at the nanoscale.

Conclusions:

  • STED microscopy provides unprecedented resolution for biological samples.
  • Facilitates reinvestigation of existing research with enhanced detail.
  • Offers novel avenues for biomedical discovery through nanoscale imaging.