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Analysis of Successive Focused Ion Beam Slices by Scanning Electron Imaging and 3D Reconstruction

Published online by Cambridge University Press:  26 February 2011

Terence Yeoh ,
Neil Ives ,
Nathan Presser ,
Gary Stupian ,
Martin Leung ,
John McCollum  and
Frank Hawley
Terence Yeoh
Affiliation:
Terence.S.Yeoh@aero.org, The Aerospace Corporation, Materials Technology Department, 2350 E El Segundo Blvd, El Segundo, CA, 90245, United States, 310-336-1616
Neil Ives
Affiliation:
Neil.Ives@aero.org, The Aerospace Corporation, Microelectronics Technology Department, United States
Nathan Presser
Affiliation:
Nathan.Presser@aero.org, The Aerospace Corporation, Microelectronics Technology Department, United States
Gary Stupian
Affiliation:
Gary.Stupian@aero.org, The Aerospace Corporation, Microelectronics Technology Department
Martin Leung
Affiliation:
Martin.Leung@aero.org, The Aerospace Corporation, Microelectronics Technology Department, United States
John McCollum
Affiliation:
John.McCollum@actel.com, Actel Corporation, United States
Frank Hawley
Affiliation:
Frank.Hawley@actel.com, Actel Corporation, United States
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Abstract

An antifuse structure was analyzed using scanning electron microscope imaging and focused ion beam image slicing to generate a form of three-dimensional microscopy. This method reveals nanometer scale features that could not be easily imaged using a single focused ion beam cross-section. A novel end-point detection technique has been developed to control the thickness of the slice to about 2 nm. Voxel imaging and interpretive three-dimensional reconstruction was used to resolve volumes as small as 2 cubic nm3. It was determined that the fusing region for an antifuse is a complex mixture of material phases with an elliptical volume approximately 75 nm in diameter.

Keywords

nanoscalescanning electron microscopy (SEM)ion beam analysis
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 908: Symposium OO – Growth, Modification, and Analysis by Ion Beams at the Nanoscale , 2005 , 0908-OO05-11
Copyright
Copyright © Materials Research Society 2006

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