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In situ lift-out using a FIB-SEM system.

R M Langford1, C Clinton

  • 1SFI Trinity Nanoscience Laboratory, Department of Physics, Trinity College Dublin, Dublin 2, Ireland. richard.langford@tcd.ie

Micron (Oxford, England : 1993)
|June 29, 2004
PubMed
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This study introduces an in situ lift-out technique for transmission electron microscopy specimen preparation using focused ion beam-SEM. Secondary electron imaging enhances control and success rates, especially for new users.

Area of Science:

  • Materials Science
  • Nanotechnology
  • Microscopy

Background:

  • Transmission Electron Microscopy (TEM) requires precisely prepared specimens.
  • Traditional ex situ lift-out techniques can be challenging and have lower success rates.
  • Focused Ion Beam-Scanning Electron Microscopy (FIB-SEM) offers advanced imaging capabilities.

Purpose of the Study:

  • To present a novel in situ lift-out technique for TEM specimen preparation.
  • To highlight the advantages of using secondary electron imaging within FIB-SEM for this process.
  • To compare the new in situ method with existing ex situ and other in situ techniques.

Main Methods:

  • Development and implementation of an in situ 'lift-out' technique within a FIB-SEM system.
  • Utilizing secondary electron imaging for real-time monitoring and control during specimen extraction.

Related Experiment Videos

  • Comparative analysis against ex situ lift-out and the 'wedge' in situ technique.

    • Main Results:

    • The in situ technique allows for higher magnification imaging compared to optical microscopy.
    • Enhanced control over the lift-out procedure, leading to increased success rates.
    • Demonstrated effectiveness particularly for users with less experience in specimen preparation.

    Conclusions:

    • The presented in situ lift-out technique improves the reliability and ease of TEM specimen preparation.
    • Secondary electron imaging in FIB-SEM is a key factor in the technique's success.
    • This method offers a viable alternative for producing high-quality TEM specimens.