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Related Concept Videos

Super-resolution Fluorescence Microscopy01:37

Super-resolution Fluorescence Microscopy

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 developed.
Imaging Biological Samples with Optical Microscopy01:18

Imaging Biological Samples with Optical Microscopy

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.
In optical microscopy, the specimen to be viewed is placed on a glass slide and clipped on the stage...
Total Internal Reflection Fluorescence Microscopy01:05

Total Internal Reflection Fluorescence Microscopy

Total internal reflection fluorescence microscopy or TIRF is an advanced microscopic technique used to visualize fluorophores in samples close to a solid surface with a higher refractive index, such as a glass coverslip. TIRF only allows fluorophores in proximity to the solid surface to be excited. When light from a medium with a lower refractive index (such as air) hits the glass coverslip at a critical angle, the light undergoes total internal reflection stead of passing through the glass.
Confocal Fluorescence Microscopy01:16

Confocal Fluorescence Microscopy

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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Related Experiment Video

Updated: Jun 17, 2026

High-resolution, High-speed, Three-dimensional Video Imaging with Digital Fringe Projection Techniques
11:34

High-resolution, High-speed, Three-dimensional Video Imaging with Digital Fringe Projection Techniques

Published on: December 3, 2013

Fast, background-free, 3D super-resolution optical fluctuation imaging (SOFI).

T Dertinger1, R Colyer, G Iyer

  • 1Department of Chemistry and Biochemistry, and California NanoSystems Institute, University of California, Los Angeles, CA 90095, USA. t.dertinger@chem.ucla.edu

Proceedings of the National Academy of Sciences of the United States of America
|December 19, 2009
PubMed
Summary
This summary is machine-generated.

This study introduces a novel super-resolution microscopy technique using statistical analysis of fluorescence blinking in image sequences. The method achieves a 5-fold resolution improvement, enhancing contrast in 3D imaging.

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Time Multiplexing Super Resolving Technique for Imaging from a Moving Platform
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Time Multiplexing Super Resolving Technique for Imaging from a Moving Platform

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Last Updated: Jun 17, 2026

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Published on: December 3, 2013

Multimodal Volumetric Retinal Imaging by Oblique Scanning Laser Ophthalmoscopy (oSLO) and Optical Coherence Tomography (OCT)
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Time Multiplexing Super Resolving Technique for Imaging from a Moving Platform
06:25

Time Multiplexing Super Resolving Technique for Imaging from a Moving Platform

Published on: February 12, 2014

Area of Science:

  • Optical microscopy
  • Biophysics
  • Cell biology

Background:

  • Super-resolution optical microscopy overcomes the diffraction limit of light.
  • Existing methods offer enhanced spatial resolution in fluorescence imaging.
  • Subdiffraction limit imaging is crucial for visualizing cellular structures.

Purpose of the Study:

  • To develop a novel 3D super-resolution optical microscopy approach.
  • To achieve subdiffraction limit resolution using temporal fluorescence fluctuations.
  • To enhance image contrast and reduce background noise.

Main Methods:

  • Utilizing higher-order statistical analysis of temporal fluorescence blinking.
  • Processing sequences of images (movies) from a conventional wide-field microscope.
  • Iterative discrete steps for resolution enhancement and evaluation.

Main Results:

  • Demonstrated a 5-fold improvement in spatial resolution in three dimensions.
  • Achieved significant background reduction and contrast enhancement.
  • Successfully applied the method to quantum dot-labeled microtubules in fibroblast cells.

Conclusions:

  • The developed method provides a powerful tool for 3D super-resolution imaging.
  • The technique enhances image quality even at lower resolution enhancement levels.
  • This approach has broad applicability in various scientific fields requiring high-resolution imaging.