Profile
Visual Information Measurement Smart lab
Deputy Director, Professor TAKAHASHI Yukio
International Center for Synchrotron Radiation Innovation Smart
Concurrent : Institute of Multidisciplinary Research for Advanced Materials, Institute for Materials Research, RIKEN SPring-8 Center, Institute for Catalysis, Hokkaido University
- Themes
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- Development of a novel coherent X-ray imaging method using X-ray optics
- Development of advanced X-ray ptychography imaging and its application to materials and bioimaging
- Keywords
- Coherent X-ray, Ptychography, Phase Retrieval
- Research Activities
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Pushing the Limits of Spatiotemporal Resolution in Coherent X-ray Diffraction Imaging and Its Application Development
Coherent X-ray diffraction imaging (CXDI) is a microscopic imaging technique in which coherent X-rays are irradiated onto a sample, and the sample image is reconstructed by performing phase retrieval calculations on the diffraction pattern. Since it does not require objective lenses, the method is free from limitations imposed by optical elements, enabling observations with high spatial resolution. To date, we have proposed various new methods, including high-resolution scanning CXDI (X-ray ptychography) using total-reflection focusing mirrors, three-dimensional imaging using the multislice method, spectroscopic imaging by combining with X-ray absorption fine structure (XAFS), and single-shot imaging utilizing triangular apertures. These developments have advanced applications in materials and device analysis. NanoTerasu offers a significant advantage over SPring-8 in its ability to provide higher-intensity coherent X-rays in the soft to tender X-ray region. By fully leveraging this source performance, we aim to pioneer new principles in CXDI and promote their application across a broad range of scientific fields.
External view of a high-resolution X-ray ptychography system equipped with a total-reflection focusing mirror and next-generation image detector.
Three-dimensional reconstruction image of a CMOS image sensor.
- Message
- We propose novel imaging techniques utilizing coherent X-rays to revolutionize how we visualize matter. Our goal is to achieve atomic resolution in X-ray imaging—a frontier yet to be reached—within the next ten years.
