Chemical Contrast in X-Ray Microscopy and Spatially Resolved XANES Spectroscopy of Organic Specimens

DOI Web Site 15 Citations
  • H. Ade
    Department of Physics, State University of New York, Stony Brook, NY 11794.
  • X. Zhang
    Department of Physics, State University of New York, Stony Brook, NY 11794.
  • S. Cameron
    EXXON Research and Engineering, Annandale, NJ 08801
  • C. Costello
    EXXON Research and Engineering, Annandale, NJ 08801
  • J. Kirz
    Department of Physics, State University of New York, Stony Brook, NY 11794.
  • S. Williams
    Department of Physics, State University of New York, Stony Brook, NY 11794.

Bibliographic Information

Published
1992-11-06
DOI
  • 10.1126/science.1439809
Publisher
American Association for the Advancement of Science (AAAS)

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Description

<jats:p> The scanning transmission x-ray microscope at the National Synchrotron Light Source has been used to record x-ray absorption near-edge structure (XANES) spectra from 0.01-square-micrometer regions of organic specimens. The spectral features observed reflect the molecular structure of the dominant absorbing atoms and provide the contrast mechanism for high-resolution imaging with chemical sensitivity. This technique was used with x-ray energies near the carbon <jats:italic>K</jats:italic> absorption edge to identify and map separate phases in various polymer blends and to map the DNA distribution in chromosomes with a spatial resolution of 55 nanometers. </jats:p>

Journal

  • Science

    Science 258 (5084), 972-975, 1992-11-06

    American Association for the Advancement of Science (AAAS)

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