| Literature DB >> 1439809 |
H Ade1, X Zhang, S Cameron, C Costello, J Kirz, S Williams.
Abstract
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 K 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.Entities:
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Year: 1992 PMID： 1439809 DOI： 10.1126/science.1439809
Source DB: PubMed Journal: Science ISSN： 0036-8075 Impact factor: 47.728