Quantitative, nanoscale mapping of sp² percentage and crystal orientation in carbon multilayers

Title: Quantitative, nanoscale mapping of sp² percentage and crystal orientation in carbon multilayers
Creator: Bosman, M.; Keast, V. J.; Watanabe, M.; McCulloch, D. G.; Shakerzadeh, M.; Teo, E. H. T.; Tay, B. K.
Relation: Carbon Vol. 47, Issue 1, p. 94-101
Publisher Link: http://dx.doi.org/10.1016/j.carbon.2008.09.033
Publisher: Elsevier
Resource Type: journal article
Date: 2009
Description: Experimental and analytical techniques are introduced for the quantitative, nanoscale mapping of chemical bonding information in carbon-based materials. With these techniques, the spatial orientation of graphitic crystallites in tetrahedrally bonded amorphous carbon was imaged. Simultaneously, the percentage of sp²- and sp³-bonded carbon could be mapped quantitatively, all with spatial resolution of just a few nanometers. Two electron energy-loss spectroscopy (EELS) techniques were compared: low-loss mapping of the plasmon energy and core-loss mapping of the carbon ionization edge. The recently developed EELS acquisition routine of binned gain averaging was applied, together with multivariate statistical analysis, providing a robust method for obtaining real-space, two-dimensional bonding maps.
Subject: nanoscale mappings; carbon; chemical bonds; electron energy-loss spectroscopy
Identifier: uon:7075
Identifier: http://hdl.handle.net/1959.13/925032
Identifier: ISSN:0008-6223
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