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High laser power in single-molecule localization microscopy accelerates imaging but reduces data quality. This study reveals an optimal balance for faster, higher-resolution 3D multicolor imaging with improved labeling efficiency.

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Area of Science:

  • Biophysics
  • Optical Microscopy
  • Super-resolution Imaging

Background:

  • High laser powers are frequently used in single-molecule localization microscopy (SMLM) to accelerate image acquisition.
  • However, the impact of excitation intensity on SMLM data quality, specifically localization precision and labeling density, requires systematic quantification.

Purpose of the Study:

  • To systematically investigate the influence of excitation intensity on localization precision and labeling density in SMLM.
  • To identify and present optimized imaging protocols that balance imaging speed and data quality for SMLM.

Main Methods:

  • Systematic quantification of excitation intensity effects on localization precision and labeling density in SMLM.
  • Development and testing of optimized imaging protocols for various SMLM applications.

Main Results:

  • A significant trade-off exists between imaging speed and data quality (localization precision and labeling density) under high laser power.
  • Optimized protocols were developed, demonstrating improved resolution and effective labeling efficiency.

Conclusions:

  • Optimized laser power protocols are crucial for achieving high-throughput, multicolor, and 3D SMLM.
  • These protocols enhance both the resolution and effective labeling efficiency, enabling faster and higher-quality super-resolution imaging.