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    High numerical aperture multilayer Laue lenses

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    Author
    Morgan, AJ; Prasciolu, M; Andrejczuk, A; Krzywinski, J; Meents, A; Pennicard, D; Graafsma, H; Barty, A; Bean, RJ; Barthelmess, M; ...
    Date
    2015-06-01
    Source Title
    Scientific Reports
    Publisher
    NATURE PUBLISHING GROUP
    University of Melbourne Author/s
    Morgan, Andrew
    Affiliation
    School of Physics
    Metadata
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    Document Type
    Journal Article
    Citations
    Morgan, A. J., Prasciolu, M., Andrejczuk, A., Krzywinski, J., Meents, A., Pennicard, D., Graafsma, H., Barty, A., Bean, R. J., Barthelmess, M., Oberthuer, D., Yefanov, O., Aquila, A., Chapman, H. N. & Bajt, S. (2015). High numerical aperture multilayer Laue lenses. SCIENTIFIC REPORTS, 5 (1), https://doi.org/10.1038/srep09892.
    Access Status
    Open Access
    URI
    http://hdl.handle.net/11343/254986
    DOI
    10.1038/srep09892
    Abstract
    The ever-increasing brightness of synchrotron radiation sources demands improved X-ray optics to utilise their capability for imaging and probing biological cells, nanodevices, and functional matter on the nanometer scale with chemical sensitivity. Here we demonstrate focusing a hard X-ray beam to an 8 nm focus using a volume zone plate (also referred to as a wedged multilayer Laue lens). This lens was constructed using a new deposition technique that enabled the independent control of the angle and thickness of diffracting layers to microradian and nanometer precision, respectively. This ensured that the Bragg condition is satisfied at each point along the lens, leading to a high numerical aperture that is limited only by its extent. We developed a phase-shifting interferometric method based on ptychography to characterise the lens focus. The precision of the fabrication and characterisation demonstrated here provides the path to efficient X-ray optics for imaging at 1 nm resolution.

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