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Near Edge X-Ray Absorption Fine Structure (NEXAFS) Microscopy: Chemical Analysis at Sub Visible Spatial Resolution

Published online by Cambridge University Press:  02 July 2020

H. Ade
H. Ade*
Affiliation:
Dept. of Physics, North Carolina State University, Raleigh, NC, 27695-8202
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Infrared, Raman, and fluorescence/luminescence microspectroscopy/microscopy in many instances seek to provide high sensitivity compositional and functional information that goes beyond mere elemental composition. This goal is shared by NEXAFS microscopy, in which Near Edge X-ray Absorption Fine Structure (NEXAFS) spectroscopy is employed to provide chemical sensitivity and can be relatively easily adopted in a scanning transmission x-ray microscope (STXM). In addition to compositional information, NEXAFS microscopy can exploit the dependence of x-ray absorption resonances on the bond orientation relative to the linearly polarized x rays (linear dichroism microscopy). For compositional analysis, NEXAFS microscopy is analogous to Electron Energy Loss Spectroscopy (EELS) in an electron microscope. However, when utilizing near edge spectral features, NEXAFS microscopy requires a considerable lower dose than EELS microscopy which makes it very suitable to studying radiation sensitive materials such as polymers. NEXAFS has shown to have excellent sensitivity to a wide range of moieties in polymers, including sensitivity to substitution isomerism.

Type
Optical Microanalysis
Information
Microscopy and Microanalysis , Volume 3 , Issue S2: Proceedings: Microscopy & Microanalysis '97, Microscopy Society of America 55th Annual Meeting, Microbeam Analysis Society 31st Annual Meeting, Histochemical Society 48th Annual Meeting, Cleveland, Ohio, August 10-14, 1997 , August 1997 , pp. 851 - 852
Copyright
Copyright © Microscopy Society of America 1997

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References

1.Ade, H., Zhang, X., Cameron, S., Costello, C., Kirz, J., and Williams, S., Science 258, 972 (1992).10.1126/science.1439809CrossRefGoogle Scholar
2.Ade, H. and Hsiao, B., Science 262, 1427 (1993).10.1126/science.262.5138.1427CrossRefGoogle Scholar
3.Rightor, E.et al., J. Phys. Chem. (in press).Google Scholar
4.Ade, H.et al., Res. Soc. Symp. Proc. 437, 99 (1996).10.1557/PROC-437-99CrossRefGoogle Scholar
5.Rightor, E.et al., ALS 1996 activity report (1997). Hitchcock, A.et al., these proceedings.Google Scholar
6.Smith, A.P. and Ade, H., Appl. Phys. Lett. 69. 3833 (1996).10.1063/1.117120CrossRefGoogle Scholar
7.Cody, G., et al., Energy & Fuels 9, 153 (1995), Cody, G.et al., Int. J. Coal Geol. 32, 69-86 (1996).Google Scholar
8.Zhang, et al., J. Struc. Biol. 116, 335 (1996), Buckley, C.et al., (to be published).10.1006/jsbi.1996.0051CrossRefGoogle Scholar
9. For the data shown here, we thank Profs. Kirz, J. and Jacobsen, C. from SUNY@Stony Brook and their groups for the maintenance of the Stony Brook/NSLS STXM, Smith, A.P. (NCSU) for help with data acquisition and analysis, and Germinario, L., Rafailovich, M, and Sloop, C. for providing the samples.Google Scholar