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Objective-Induced Point Spread Function Aberrations and Their Impact on Super-Resolution Microscopy.

Karole L Blythe1,2, Eric J Titus1,2, Katherine A Willets1,2

  • 1Department of Chemistry, The University of Texas at Austin, 102 East 24th Street, Austin, Texas 78712, United States.

Analytical Chemistry
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Summary
This summary is machine-generated.

Microscope objectives can cause imaging aberrations affecting super-resolution microscopy. This study assesses objective quality by analyzing point spread function deviations, identifying suitable objectives for high-quality imaging.

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Area of Science:

  • Optical microscopy
  • Super-resolution imaging
  • Nanophotonics

Background:

  • Microscope objectives are critical for imaging quality.
  • Asymmetric aberrations in point spread functions can degrade super-resolution microscopy.
  • Characterizing these aberrations is essential for reliable imaging.

Purpose of the Study:

  • To investigate how different microscope objectives induce asymmetric imaging aberrations.
  • To evaluate the impact of these aberrations on point spread function fitting in super-resolution imaging.
  • To develop a method for assessing microscope objective quality for super-resolution applications.

Main Methods:

  • Luminescence from gold nanorods was imaged using four distinct microscope objectives.
  • Diffraction-limited emission was measured to characterize deviations from expected dipolar patterns.
  • Images were fitted to a three-dipole emission model to analyze point spread function aberrations via fit residuals.

Main Results:

  • Significant variations in point spread function quality were observed across different objectives.
  • Some objectives exhibited substantial aberrations, rendering them unsuitable for super-resolution imaging.
  • Fit residuals effectively visualized objective-induced aberrations.

Conclusions:

  • Microscope objective choice critically impacts super-resolution imaging fidelity.
  • A straightforward method for evaluating point spread function quality of objectives was established.
  • This assessment strategy aids in selecting appropriate objectives for advanced microscopy.