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Related Concept Videos

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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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.
Three-Dimensional Microscopy in Microbiology01:28

Three-Dimensional Microscopy in Microbiology

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: Jun 5, 2026

Simultaneous Interference Reflection and Total Internal Reflection Fluorescence Microscopy for Imaging Dynamic Microtubules and Associated Proteins
06:43

Simultaneous Interference Reflection and Total Internal Reflection Fluorescence Microscopy for Imaging Dynamic Microtubules and Associated Proteins

Published on: May 3, 2022

Spatial light interference microscopy (SLIM).

Zhuo Wang1, Larry Millet, Mustafa Mir

  • 1Department of Electrical and Computer Engineering, Beckman Institute for Advanced Science & Technology, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA.

Optics Express
|January 26, 2011
PubMed
Summary
This summary is machine-generated.

Spatial Light Interference Microscopy (SLIM) offers nanoscale imaging of live cells. This interferometry technique provides high-speed, quantitative topographic maps, surpassing atomic force microscopy in speed.

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Last Updated: Jun 5, 2026

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Published on: May 3, 2022

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Single Plane Illumination Module and Micro-capillary Approach for a Wide-field Microscope
08:53

Single Plane Illumination Module and Micro-capillary Approach for a Wide-field Microscope

Published on: August 15, 2014

Area of Science:

  • Biophysics
  • Optical Microscopy
  • Cell Biology

Background:

  • Transparent biological specimens often lack contrast in standard light microscopy.
  • Phase contrast and holography are established techniques for imaging transparent samples.
  • Quantitative measurement of nanoscale structures and dynamics in live cells remains challenging.

Purpose of the Study:

  • To introduce Spatial Light Interference Microscopy (SLIM) as a novel optical microscopy technique.
  • To demonstrate SLIM's capability for measuring nanoscale structures and dynamics in live cells.
  • To provide quantitative optical path-length maps with high topographic accuracy.

Main Methods:

  • SLIM combines principles of Zernike's phase contrast microscopy and Gabor's holography.
  • The technique utilizes interferometry to record phase information from the specimen.
  • SLIM is implemented as an add-on module for existing phase contrast microscopes.

Main Results:

  • SLIM reveals intrinsic contrast of cellular structures.
  • Quantitative optical path-length maps are generated across the sample.
  • Achieved topographic accuracy is comparable to atomic force microscopy, with 1,000x higher acquisition speed.

Conclusions:

  • SLIM provides novel insights into cell dynamics, demonstrated in rat brain primary cell cultures.
  • The technique offers a powerful tool for live-cell imaging at the nanoscale.
  • SLIM has the potential to significantly impact the field of light microscopy.