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An electron microscope for the aberration-corrected era.

O L Krivanek1, G J Corbin, N Dellby

  • 1Nion Co., 1102 8th Street, Kirkland, WA 98033, USA. krivanek.ondrej@gmail.com

Ultramicroscopy
|December 7, 2007
PubMed
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A new scanning transmission electron microscope (STEM) was developed to meet high-resolution demands. Innovations include a flexible probe, advanced aberration correction, and modular design for enhanced performance.

Area of Science:

  • Materials Science
  • Physics
  • Instrumentation

Background:

  • High-resolution electron microscopy demands advanced instrument performance.
  • Aberration correction significantly increases requirements for electron microscope components.

Purpose of the Study:

  • To design and construct a novel scanning transmission electron microscope (STEM).
  • To meet the performance demands of aberration-corrected high-end electron microscopy.

Main Methods:

  • Development of a flexible illumination system for on-the-fly probe property adjustment.
  • Integration of a third-generation aberration corrector for fifth-order geometric aberration correction.
  • Implementation of an ultra-responsive five-axis sample stage and optimized detectors.

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Main Results:

  • Construction of a new STEM featuring a modular column design.
  • Incorporation of in situ sample storage, cleaning, and computer-controlled loading.
  • Demonstration of the microscope's capabilities through examples.

Conclusions:

  • The new STEM design addresses the challenges posed by aberration correction.
  • Innovations in the microscope enhance its flexibility, usability, and performance.
  • The described instrument represents a significant advancement in electron microscopy technology.