Nanoscale imaging with resonant coherent X rays: extension of multiple-wavelength anomalous diffraction to nonperiodic structures.
Nanoscale imaging with resonant coherent X rays: extension of multiple-wavelength anomalous diffraction to nonperiodic structures.
复制标题
共振相干 X 射线纳米级成像：多波长反常衍射扩展到非周期结构。
DOI：
10.1103/physrevlett.101.076101
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发表时间：
2008
影响因子：
8.6
通讯作者：
J. Stöhr
中科院分区：
文献类型：
--
作者：
A. Scherz;D. Zhu;R. Rick;W. Schlotter;S. Roy;J. Lüning;J. Stöhr
广泛应用于大分子结构测定的多波长异常衍射方法，被推广到非周期纳米结构的成像中。我们通过在碳K边缘（285 eV）的两种共振记录的相干散射模式的组合来证明相位问题的解决。我们的方法结合了迭代相位检索和x射线全息方法，产生独特和快速的重建。我们的方法的元素、化学和磁性状态特异性进一步使其广泛适用于广泛的纳米结构，提供了原则上仅受波长限制的空间分辨率。
The methodology of multiple-wavelength anomalous diffraction, widely used for macromolecular structure determination, is extended to the imaging of nonperiodic nanostructures. We demonstrate the solution of the phase problem by a combination of two resonantly recorded coherent scattering patterns at the carbon K edge (285 eV). Our approach merges iterative phase retrieval and x-ray holography approaches, yielding unique and rapid reconstructions. The element, chemical, and magnetic state specificity of our method further renders it widely applicable to a broad range of nanostructures, providing a spatial resolution that is limited, in principle, by wavelength only.