Infoscience

Review

Hard-X-ray Zone Plates: Recent Progress

The technology to focus hard-X-rays (photon energy larger than 1-2 keV) has made great progress in the past three years. The progress was particularly spectacular for lenses based on the Fresnel zone plate concept. The spatial resolution notably increased by a factor of three, opening up entirely new domains of application, specifically in biomedical research. As we shall see, this evolution is the result of a painstaking optimization of many different aspects rather than of a single technical breakthrough.

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