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Related Experiment Videos

Image deconvolution in spherical aberration-corrected high-resolution transmission electron microscopy.

C Y Tang1, J H Chen, H W Zandbergen

  • 1Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China.

Ultramicroscopy
|March 21, 2006
PubMed
Summary

Image deconvolution successfully mapped silicon

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Area of Science:

  • Materials Science
  • Electron Microscopy

Background:

  • Spherical aberration (C(s)) in Field Emission Gun High-Resolution Transmission Electron Microscopy (FEG-HRTEM) limits image resolution.
  • Previous image deconvolution methods were developed for FEG-HRTEM without C(s) correction.

Purpose of the Study:

  • To apply and validate image deconvolution for FEG-HRTEM equipped with a C(s) corrector.
  • To derive the projected potential and atomic structure of silicon.

Main Methods:

  • Image deconvolution technique applied to FEG-HRTEM with C(s) correction.
  • Selection of four qualified [1 1 0] images of silicon from a through-focus series.
  • Derivation of projected potential and atomic structure maps.

Main Results:

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  • Successful application of image deconvolution to C(s)-corrected FEG-HRTEM.
  • Accurate derivation of the projected potential for silicon [1 1 0].
  • Obtained "dumbbell" structure maps show good agreement with calculated potential maps.

Conclusions:

  • Image deconvolution is effective with C(s)-corrected FEG-HRTEM.
  • Established criterion for selecting qualified images for deconvolution.
  • Potential applications in defect study and ab initio crystal structure determination.