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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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Updated: Sep 16, 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

Electrochemical fluorescence modulation enables simultaneous multicolour imaging.

Ying Yang¹, Yuanqing Ma¹, Alexander Macmillan²

¹School of Chemistry and Australian Centre for NanoMedicine, University of New South Wales, Sydney, New South Wales Australia.

Nature Photonics

|July 7, 2025

Summary

This summary is machine-generated.

This study introduces a novel multicolour fluorescence imaging technique. It allows simultaneous visualization of up to four fluorophores with overlapping spectra using electrochemical modulation for distinct signal separation.

Keywords:

Fluorescence imaging Fluorescent probes Super-resolution microscopy

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Last Updated: Sep 16, 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

Conducting Multiple Imaging Modes with One Fluorescence Microscope

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Published on: October 28, 2018

Multicolor Fluorescence Detection for Droplet Microfluidics Using Optical Fibers

Multicolor Fluorescence Detection for Droplet Microfluidics Using Optical Fibers

Published on: May 5, 2016

Area of Science:

Cell biology
Microscopy
Spectroscopy

Background:

Multicolour fluorescence imaging is vital for studying complex cellular processes.
Current methods require fluorophores with distinct spectral or lifetime properties.
Resolving spectrally similar fluorophores remains a challenge in microscopy.

Purpose of the Study:

To develop a new multicolour imaging strategy for resolving spectrally overlapping fluorophores.
To enable simultaneous visualization of multiple targets using standard fluorescence microscopes.
To offer an accessible multicolour imaging pathway for diverse scientific fields.

Main Methods:

Utilized electrochemical modulation to control fluorophore brightness.
Developed a single-colour optical configuration for multicolour imaging.
Applied linear unmixing based on distinct fluorescence response patterns.
Demonstrated applicability to four-colour STED imaging.

Main Results:

Successfully resolved up to four spectrally overlapping fluorophores.
Each fluorophore exhibited a unique fluorescence response pattern under electrochemical modulation.
Electrochemical fluorescence switching was effective for multicolour imaging and STED microscopy.

Conclusions:

Electrochemical fluorescence switching provides a robust method for multicolour imaging.
This technique simplifies multicolour imaging by using a single-colour optical setup.
The approach is adaptable to various microscopes, facilitating broader scientific application.