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Transmission electron microscopy specimen preparation perpendicularto the long axis of high aspect ratio features

A new variation of transmission electron microscopy (TEM) specimen preparation is introduced. By thinning a tall high aspect ratio structure perpendicular to the long dimension (i.e., from the side) rather than from perpendicular to the short dimension (either the top or the bottom), it is possible...

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Bibliographic Details
Published in:Journal of vacuum science & technology. A, Vacuum, surfaces, and films Vacuum, surfaces, and films, 2009-10, Vol.27 (6), p.1352-1359
Main Authors: Irwin, R. B., Anciso, A., Jones, P. J., Glenn, A. L., Williams, B. L., Sridhar, S., Arshad, S.
Format: Article
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Summary:A new variation of transmission electron microscopy (TEM) specimen preparation is introduced. By thinning a tall high aspect ratio structure perpendicular to the long dimension (i.e., from the side) rather than from perpendicular to the short dimension (either the top or the bottom), it is possible to obtain a more uniformly thin TEM specimen over the entire long dimension of the structure. This article will describe the rational for this variation in specimen preparation. The necessary modifications of four different specimen preparation methods ( in situ lift-out, traditional H -bar, ex situ lift-out, and tripod polishing) will be discussed and images of specimens obtained by both of these first two methods will be shown. Additional potential advantages and other applications of this specimen preparation method will be covered.
ISSN:0734-2101
1520-8559
DOI:10.1116/1.3248271