Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.13/925032
- Quantitative, nanoscale mapping of sp² percentage and crystal orientation in carbon multilayers
Keast, V. J.;
McCulloch, D. G.;
Teo, E. H. T.;
Tay, B. K.
- The University of Newcastle. Faculty of Science & Information Technology, School of Mathematical and Physical Sciences
- 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.
- Carbon Vol. 47, Issue 1, p. 94-101
- Publisher Link
electron energy-loss spectroscopy
- Resource Type
- journal article