氧烷
分辨率(逻辑)
同步加速器
吸收(声学)
材料科学
显微镜
光谱学
分析化学(期刊)
显微镜
化学成像
千分尺
X射线光谱学
X射线
纳米
吸收光谱法
谱线
同步辐射
光学
化学
物理
天文
地质学
遥感
量子力学
色谱法
人工智能
高光谱成像
复合材料
计算机科学
作者
Harald Ade,Xiaodong Zhang,S. D. Cameron,Christine A. Costello,Janos Kirz,S. Williams
出处
期刊:Science
[American Association for the Advancement of Science (AAAS)]
日期:1992-11-06
卷期号:258 (5084): 972-975
被引量:361
标识
DOI:10.1126/science.1439809
摘要
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.
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