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Related Experiment Videos

Post-thinning technique for a lifted-out membrane.

Shoji Sadayama1, Yasuhiko Sugiyama, Koji Iwasaki

  • 1SII NanoTechnology Inc., Sunto-gun, Shizuoka 410-1393, Japan. shouji.sadayama@sii.co.jp

Journal of Electron Microscopy
|December 8, 2004
PubMed
Summary

A new Gallium (Ga+) ion beam method was developed for thinning membranes on a mesh. This technique successfully prepared specimens for transmission electron microscopy of silicon dynamic random-access memory cells.

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Electron Microscopy

Background:

  • Transmission electron microscopy (TEM) requires ultra-thin specimens.
  • Preparing specimens from complex structures like integrated circuits can be challenging.
  • Existing thinning methods may have limitations for specific sample types.

Purpose of the Study:

  • To develop a novel post-thinning technique for lifted-out membranes.
  • To enable efficient specimen preparation for TEM analysis of silicon dynamic random-access memory (DRAM).

Main Methods:

  • Utilized a Gallium (Ga+) ion beam focused ion beam (FIB) system.
  • Employed a 5 kV accelerating voltage for ion beam thinning.
  • Applied the technique to membranes already mounted on a support mesh.

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Main Results:

  • Successfully thinned lifted-out membranes mounted on a mesh.
  • Prepared high-quality transmission electron microscopy specimens.
  • Demonstrated applicability to a selected cell of silicon dynamic random-access memory.

Conclusions:

  • The novel Ga+ ion beam technique is effective for post-thinning membranes on a mesh.
  • This method facilitates the preparation of TEM specimens from silicon DRAM.
  • The technique offers a viable approach for advanced materials analysis.