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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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Related Experiment Video

Updated: Mar 5, 2026

Author Spotlight: Non-Invasive Imaging of Complex Bio-Structures Using Polarization-Sensitive Two-Photon Microscopy

Author Spotlight: Non-Invasive Imaging of Complex Bio-Structures Using Polarization-Sensitive Two-Photon Microscopy

Published on: September 8, 2023

Polarization sensitive localization based super-resolution microscopy with a birefringent wedge.

József Sinkó¹, Tamás Gajdos, Elvira Czvik

¹Department of Optics and Quantum Electronics, University of Szeged, Szeged, Dóm tér 9., 6720 Hungary.

Methods and Applications in Fluorescence

|March 23, 2017

Summary

This summary is machine-generated.

This study introduces a new super-resolution microscopy method using polarization to analyze biological structures. It reveals local molecular properties and fibril orientations with high precision.

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A Multimodal Wide-Field Fourier-Transform Raman Microscope

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Area of Science:

Biophysics
Microscopy
Molecular Imaging

Background:

Super-resolution microscopy techniques allow imaging beyond the diffraction limit.
Understanding the local environment of fluorescent molecules is crucial for biological studies.
Polarization properties of light can provide information about molecular orientation and environment.

Purpose of the Study:

To develop a practical polarization-sensitive super-resolution microscopy method.
To investigate the local chemical and physical properties of fluorescent dye molecules.
To correlate fluorescent dipole orientation with biological structures.

Main Methods:

Utilized a birefringent dual wedge for polarization-sensitive localization.
Employed single-molecule polarization degree measurements.
Performed polarization-sensitive Super-resolution Radial Localization Microscopy (SRLM) on F-Actins.

Main Results:

Demonstrated a practical method for polarization-sensitive super-resolution imaging.
Showed that polarization degree measurements reveal local environmental properties.
Established a correlation between fluorescent dipole orientation and F-actin fibril axis.

Conclusions:

The developed method provides insights into sub-diffraction sized biological structures.
Polarization-sensitive microscopy is a valuable tool for studying molecular environments.
This technique can elucidate the relationship between molecular orientation and biological organization.