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A Simplified Method For Modifying TEM Copper Grids For Use With The Small Angle Cleavage Technique

Published online by Cambridge University Press:  14 March 2018

Scott D. Walck
Scott D. Walck*
Affiliation:
Wright Laboratory, Wright Patterson AFB

Extract

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The Small Angle Cleavage Technique (SACT) developed by John McCaffrey is an extremely easy and cost-effective technique for producing superior cross sectional TEM samples from semiconductor and other single crystal materials. In the original technique, a special jig is required to be made in order to make too cuts in a 2 x 0.5 mm slotted capper TEM grid to create vertical tabs to mount the cleaved samples. This jig is not commercially available and the actual cutting and bending of the grids require a significant amount of manual dexterity. (Fat fingered fellows, like myself, need not apply.) Early on, John proposed a design for a commercial grid that could easily be bent into the required shape with no cutting, but the electron microscopy supply houses passed on the idea. Until now, microscopists wanting to experiment with the technique had to invest in the cost of having one of these jigs made.

Type
Research Article
Information
Microscopy Today , Volume 4 , Issue 4 , May 1996 , pp. 12 - 13
Copyright
Copyright © Microscopy Society of America 1996

References

1. McCaffrey, J. P., Ultramicrosccoy, 33, p. 149, 1991 Google Scholar
2. McCaffrey, J.P.. Specimen Preparation for Transmission Electron Microscopy III. Materials Research Society Symposium Proceedings., Vol 254, p. 109: 1992.Google Scholar
3. McCaffrey, John P., Microscopy Research and Teen mom 24, p. 180, 1993.Google Scholar
4.The tabbed Veco grids are available through Electron Microscopy Sciences, 321 Morris Road, Box 251, Fort Washington, PA 19034, phone: 1-800-523-5874 or Ernest F. Fullam, Inc., 900 Albany Shaker Rd., Latham, NY, 12110-1491, phone: 1-800- 833-4024. They are the only suppliers of the Veco grids which have the little notched area on the handle that I have found.Google Scholar
5.The silver epoxy that is used for mounting samples is Epo-Tek H-22 from Epoxy Technology, Inc., 14 Fortune Drive, Billerica, MA 01821, phone: (508) 667-3805.Google Scholar