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Super-resolution Fluorescence Microscopy01:37

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Open-source 3D active sample stabilization for fluorescence microscopy.

Sanket Patil1, Giuseppe Vicidomini2, Eli Slenders2

  • 1Molecular Microscopy and Spectroscopy (MMS), Istituto Italiano di Tecnologia, Genoa, Italy; Department of Informatics, Bioengineering, Robotics and Systems Engineering (DIBRIS), University of Genoa, Genoa, Italy.

Biophysical Reports
|April 20, 2025
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Summary
This summary is machine-generated.

This study introduces a 3D active sample stabilization system using fiducial markers for super-resolution microscopy. The open-source system ensures nanometer-scale stability for hours, enhancing live-cell imaging accessibility.

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Area of Science:

  • Biophysics
  • Microscopy
  • Optical Engineering

Background:

  • Super-resolution microscopy offers nanometer-scale resolution but requires exceptional sample stability.
  • Long imaging durations, especially for live-cell studies, are challenged by sample drift.
  • Artifacts from instability can compromise data interpretation in high-resolution imaging.

Purpose of the Study:

  • To develop an accessible and effective 3D active sample stabilization system for prolonged super-resolution microscopy.
  • To enable high-resolution live-cell imaging over extended periods without compromising data integrity.
  • To provide a customizable, open-source solution for the scientific community.

Main Methods:

  • A 3D active sample stabilization system was engineered using off-the-shelf optical and photonic components.
  • Real-time tracking of fiducial markers was employed to monitor and correct sample movement.
  • An open-source Python software package was developed for system control and data acquisition.

Main Results:

  • The system achieved a standard deviation of sample movement within 1 nm in both lateral and axial directions.
  • Stable imaging was maintained for durations ranging from hours.
  • The system demonstrated compatibility with super-resolution, confocal, and widefield microscopy techniques.

Conclusions:

  • The developed 3D active sample stabilization system significantly enhances accessibility to prolonged super-resolution microscopy.
  • The system's open-source nature and use of common components promote widespread adoption and customization.
  • This technology facilitates hours-long live-cell imaging experiments with unprecedented stability and resolution.