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Published in

Elsevier, Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, (339), p. 85-90, 2014

DOI: 10.1016/j.nimb.2014.02.131

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The SFM/ToF-SIMS combination for advanced chemically-resolved analysis at the nanoscale

Journal article published in 2014 by Laetitia Bernard, Jakob Heier, Wolfgang Paul, Hans J. Hug
This paper is available in a repository.
This paper is available in a repository.

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Abstract

The combination of Time-of-flight Secondary Ion Mass Spectrometry (ToF-SIMS) and Scanning Force Microscopy (SFM) allows the 3D-compositional analysis of samples or devices. Typically, the topographical data obtained by SFM is used to determine the initial sample topography and the absolute depth of the ToF-SIMS analysis. Here ToF-SIMS and SFM data sets obtained on 2 prototypical samples are explored to go beyond conventional 3D-compositional analysis. SFM topographical and material contrast maps are combined with ToF-SIMS retrospective analysis to detect features that would have escaped a conventional ToF-SIMS data analysis. In addition, SFM data is used to extrapolate the chemical information beyond the spatial resolution of ToF-SIMS, allowing the mapping of the chemical composition at the nanoscale.