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Ultracompact mirror device for forming 20-nm achromatic soft-X-ray focus toward multimodal and multicolor nanoanalyses

Author

Listed:
  • Takenori Shimamura

    (The University of Tokyo
    Japan Synchrotron Radiation Research Institute
    The University of Tokyo)

  • Yoko Takeo

    (Japan Synchrotron Radiation Research Institute
    The University of Tokyo)

  • Fumika Moriya

    (The University of Tokyo)

  • Takashi Kimura

    (The University of Tokyo)

  • Mari Shimura

    (RIKEN SPring-8 Center
    National Center for Global Health and Medicine)

  • Yasunori Senba

    (Japan Synchrotron Radiation Research Institute
    RIKEN SPring-8 Center)

  • Hikaru Kishimoto

    (Japan Synchrotron Radiation Research Institute)

  • Haruhiko Ohashi

    (Japan Synchrotron Radiation Research Institute
    RIKEN SPring-8 Center)

  • Kenta Shimba

    (The University of Tokyo)

  • Yasuhiko Jimbo

    (The University of Tokyo)

  • Hidekazu Mimura

    (RIKEN SPring-8 Center
    The University of Tokyo)

Abstract

Nanoscale soft-X-ray microscopy is a powerful analysis tool in biological, chemical, and physical sciences. To enhance its probe sensitivity and leverage multimodal soft-X-ray microscopy, precise achromatic focusing devices, which are challenging to fabricate, are essential. Here, we develop an ultracompact Kirkpatrick-Baez (ucKB) mirror, which is ideal for the high-performance nanofocusing of broadband-energy X-rays. We apply our advanced fabrication techniques and short-focal-length strategy to realize diffraction-limited focusing over the entire soft-X-ray range. We achieve a focus size of 20.4 nm at 2 keV, which represents a significant improvement in achromatic soft-X-ray focusing. The ucKB mirror extends soft-X-ray fluorescence microscopy by producing a bicolor nanoprobe with a 1- or 2-keV photon energy. We propose a subcellular chemical mapping method that allows a comprehensive analysis of specimen morphology and the distribution of light elements and metal elements. ucKB mirrors will improve soft-X-ray nanoanalyses by facilitating photon-hungry, multimodal, and polychromatic methods, even with table-top X-ray sources.

Suggested Citation

  • Takenori Shimamura & Yoko Takeo & Fumika Moriya & Takashi Kimura & Mari Shimura & Yasunori Senba & Hikaru Kishimoto & Haruhiko Ohashi & Kenta Shimba & Yasuhiko Jimbo & Hidekazu Mimura, 2024. "Ultracompact mirror device for forming 20-nm achromatic soft-X-ray focus toward multimodal and multicolor nanoanalyses," Nature Communications, Nature, vol. 15(1), pages 1-12, December.
    • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-023-44269-w
    DOI: 10.1038/s41467-023-44269-w
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    References listed on IDEAS

    as
    1. Weilun Chao & Bruce D. Harteneck & J. Alexander Liddle & Erik H. Anderson & David T. Attwood, 2005. "Soft X-ray microscopy at a spatial resolution better than 15 nm," Nature, Nature, vol. 435(7046), pages 1210-1213, June.
    2. Adam Kubec & Marie-Christine Zdora & Umut T. Sanli & Ana Diaz & Joan Vila-Comamala & Christian David, 2022. "An achromatic X-ray lens," Nature Communications, Nature, vol. 13(1), pages 1-7, December.
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