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Super-resolution Fluorescence Microscopy

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...

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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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Related Experiment Video

Updated: May 15, 2025

Simultaneous Multicolor Imaging of Biological Structures with Fluorescence Photoactivation Localization Microscopy

Simultaneous Multicolor Imaging of Biological Structures with Fluorescence Photoactivation Localization Microscopy

Published on: December 9, 2013

LED-based multicolor extended resolution transmission fluorescence microscopy.

Huaiyuan Zhang¹, Yiting Hu¹, Xingwei Pu¹

¹University of Electronic Science and Technology of China, School of Optoelectronic Science and Engineering, Chengdu, China.

Journal of Biomedical Optics

|April 9, 2025

Summary

This summary is machine-generated.

We developed a compact, cost-effective multicolor extended resolution fluorescence imaging system. This innovative tool simplifies biological sample analysis, offering enhanced visualization of intricate structures for researchers.

Keywords:

fluorescence imaging light-emitting diode structured illumination microscopy

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Last Updated: May 15, 2025

Simultaneous Multicolor Imaging of Biological Structures with Fluorescence Photoactivation Localization Microscopy

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Published on: June 30, 2018

Area of Science:

Biomedical Imaging
Optical Microscopy
Molecular Biology

Background:

Fluorescence imaging offers molecular specificity for studying complex biological systems.
Super-resolution microscopy advances biological exploration but often involves high costs and bulky equipment.
Current multicolor super-resolution systems face limitations in accessibility and affordability.

Purpose of the Study:

To present a novel multicolor extended resolution fluorescence imaging system.
To simplify optical paths, reduce size, and lower costs compared to existing systems.
To enable accessible extended resolution imaging for biological research.

Main Methods:

Utilizes a light-emitting diode (LED) for simplified optical design.
Employs structured illumination with a diffraction unit in a wide-field microscope.
Designed as a compact, add-on unit for integration into standard wide-field microscopes.

Main Results:

Achieved concurrent extended resolved imaging of three-color microsphere beads.
Successfully demonstrated multicolor extended resolution fluorescence imaging of biological tissue.
Revealed intricate structural details within biological samples with enhanced resolution.

Conclusions:

Presents a structurally simple and cost-effective alternative to traditional super-resolution microscopes.
Offers flexible multicolor extended resolution fluorescence imaging capabilities.
Has potential applications in multimodal imaging and advanced biological research.