File:Transmission electron microscope.jpg

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Summary

The One-Angstrom Microscope (OÅM) is a mid-voltage transmission electron microscope (TEM) capable of producing images with sub-angstrom resolution. The basic instrument is a modified Philips CM300FEG/UT, a TEM with a field-emission electron source and an ultra-twin objective lens with low spherical aberration (Cs = 0.60 mm) and a point-to-point resolution of 1.7Å. Special, highly stable power supplies for the objective lens and for high-voltage power produce an information limit of 0.8Å. A 2048x2048-pixel charge-coupled device (CCD) camera digitally records images up to a maximum magnification of 38Mx. The microscope can operate at an acceleration voltage of either 300kV or 150 kV and can produce aberration-corrected exit wave images with 0.8Å resolution. The OÅM can operate in any of the following modes:

  • Focal series restoration from lattice images, using focal-series reconstruction
  • Electron holography
  • Annular dark field TEM imaging
  • Energy filtered imaging and spectroscopy
  • Electron tomography

Copyright status

This image is public domain because it was first published by th Lawrence Berkeley National Laboratory

Source

http://ncem.lbl.gov/frames/oam.htm

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current17:49, 10 July 2008Thumbnail for version as of 17:49, 10 July 2008481 × 612 (196 KB)AshcraftThe One-Angstrom Microscope (OÅM) is a mid-voltage transmission electron microscope (TEM) capable of producing images with sub-angstrom resolution. The basic instrument is a modified Philips CM300FEG/UT, a TEM with a field-emission electron source and an

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