منابع مشابه
Autoindexing diffraction images with iMosflm
An overview of autoindexing diffraction images based on one-dimensional fast Fourier transforms is presented. The implementation of the algorithm in the Mosflm/iMosflm program suite is described with a discussion of practical issues that may arise and ways of assessing the success or failure of the procedure. Recent developments allow indexing of images that show multiple lattices, and several ...
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There is a pressing need for the archiving and curation of raw X-ray diffraction data. This information is critical for validation, methods development and improvement of archived structures. However, the relatively large size of these data sets has presented challenges for storage in a single worldwide repository such as the Protein Data Bank archive. This problem can be avoided by using a fed...
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Limited diffractlon beams were first described by Stratton [l] and then produced experimentally by Dumin in optics [2]. Bessel beams [1,2], X waves [3,4], and bowtie beams [5] are just a few examples of the limited diffract~on beams. Theoretically, these beams have an infinite depth of field, i.e., they can propagate to Infinite dlstance without spreading. In practice, when produced with a fini...
متن کاملEnantiomorph determination using inverse reference-beam diffraction images.
It is shown that enantiomorph structures of a noncentrosymmetric crystal can be determined, in the absence of anomalous diffraction signals, by measuring two series of reference-beam oscillation diffraction patterns related by an inverse-beam geometry. The corresponding intensities of the Friedel pairs recorded on the two sets of images exhibit the characteristic three-beam interference effects...
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The fabrication of functional metamaterials with extreme feature resolution finds a host of applications such as the broad area of surface/light interaction. Nonplanar features of such structures can significantly enhance their performance and tunability, but their facile generation remains a challenge. Here, we show that carefully designed out-of-plane nanopillars made of metal-dielectric comp...
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ژورنال
عنوان ژورنال: Proceedings of the Physical Society of London
سال: 1911
ISSN: 1478-7814
DOI: 10.1088/1478-7814/24/1/354