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In-phase-contrast microscopes, interference between light directly passing through a cell and light refracted by cellular components is used to create high-contrast, high-resolution images without staining. It is the oldest and simplest type of microscope that creates an image by altering the wavelengths of light rays passing through the specimen. Altered wavelength paths are created using an annular stop in the condenser. The annular stop produces a hollow cone of...
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Updated: Jun 20, 2026

High-Accuracy Correction of 3D Chromatic Shifts in the Age of Super-Resolution Biological Imaging Using Chromagnon
08:18

High-Accuracy Correction of 3D Chromatic Shifts in the Age of Super-Resolution Biological Imaging Using Chromagnon

Published on: June 16, 2020

Chromatic correction: a revolution in electron microscopy?

J Zach1

  • 1CEOS GmbH, Englerstr. 28, 69126 Heidelberg, Germany. zach@ceos-gmbh.de

Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences
|August 19, 2009
PubMed
Summary
This summary is machine-generated.

Chromatic aberration correction in electron microscopes is advancing. This study explores if new chromatic correctors can enable high-resolution transmission electron microscopy (TEM) with simpler, unconventional designs, potentially replacing current complex technologies.

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Area of Science:

  • Electron Microscopy
  • Optical Physics
  • Materials Science

Background:

  • Chromatic aberration has historically limited electron microscope resolution.
  • Significant developments in transmission electron microscopes (TEMs) focused on mitigating chromatic aberration through high voltages and specialized lenses.
  • Recent advancements have brought chromatic correction capabilities to TEMs.

Purpose of the Study:

  • To investigate if advanced chromatic correction can simplify TEM design.
  • To explore new imaging possibilities by overcoming current instrument constraints.
  • To demonstrate high-resolution TEM achievable with unconventional designs.

Main Methods:

  • Development and application of chromatic correctors in electron microscopy.
  • Design and testing of a 0.1 nm resolution TEM.
  • Utilizing unconventional microscope configurations: low voltages, far-field objective lenses, and inexpensive electron guns.

Main Results:

  • Demonstration of 0.1 nm resolution in a TEM.
  • Successful implementation of unconventional designs including very low voltages and far-field objective lenses.
  • Potential for simplified and more accessible high-resolution electron microscopy.

Conclusions:

  • Chromatic correction is a key technology for advancing electron microscopy.
  • Unconventional TEM designs with chromatic correction can achieve high resolution.
  • This approach may reduce the need for complex, high-cost components in future TEMs.