Hideshi Uematsu
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View article: Broadband high-resolution X-ray ptychography system spanning tender to hard X-ray regimes
Broadband high-resolution X-ray ptychography system spanning tender to hard X-ray regimes Open
X-ray ptychography is a high-resolution imaging technique capable of resolving nanoscale structures and probing chemical states. However, despite advances, most conventional X-ray ptychography systems have been designed to operate within a…
View article: Spatiotemporal mapping of alloy mesostructure dynamics via multimodal coherent X-ray diffraction imaging
Spatiotemporal mapping of alloy mesostructure dynamics via multimodal coherent X-ray diffraction imaging Open
Understanding mesoscale structural dynamics of precipitation-strengthened alloys is essential for optimizing the mechanical performances of these alloys. Herein, we establish a multimodal coherent X-ray diffraction imaging framework for sp…
View article: Multidimensional Tracking and Clustering of Electrochemical Reactions in the Positive Electrode of Lithium-Ion Batteries via Operando X-ray Nanoscale Chemical Imaging
Multidimensional Tracking and Clustering of Electrochemical Reactions in the Positive Electrode of Lithium-Ion Batteries via Operando X-ray Nanoscale Chemical Imaging Open
View article: Development of <i>Operando</i> Hard X-ray Ptychography: Application to Thin-Film All-Solid-State Lithium-Ion Batteries
Development of <i>Operando</i> Hard X-ray Ptychography: Application to Thin-Film All-Solid-State Lithium-Ion Batteries Open
View article: PID3Net: a deep learning approach for single-shot coherent X-ray diffraction imaging of dynamic phenomena
PID3Net: a deep learning approach for single-shot coherent X-ray diffraction imaging of dynamic phenomena Open
This paper introduces a deep learning (DL)-based method for phase retrieval tailored to single-shot, multiple-frame coherent X-ray diffraction imaging (CXDI), designed specifically for visualizing local nanostructural dynamics within a lar…
View article: In situ heating coherent X-ray diffraction imaging for visualizing nanometer-scale structural changes in metallic materials
In situ heating coherent X-ray diffraction imaging for visualizing nanometer-scale structural changes in metallic materials Open
View article: Guided-image-filtering-assisted phase retrieval for amplitude reconstruction in single-frame coherent diffraction imaging
Guided-image-filtering-assisted phase retrieval for amplitude reconstruction in single-frame coherent diffraction imaging Open
Coherent diffraction imaging enables high-resolution sample observations to surpass lens performance limitations. However, accurate reconstruction of amplitude images from a single diffraction intensity pattern remains challenging, hinderi…
View article: Three-Dimensional Nanoscale Imaging of SiO2 Nanofiller in Styrene-Butadiene Rubber with High-Resolution and High-Sensitivity Ptychographic X-ray Computed Tomography
Three-Dimensional Nanoscale Imaging of SiO2 Nanofiller in Styrene-Butadiene Rubber with High-Resolution and High-Sensitivity Ptychographic X-ray Computed Tomography Open
SiO2 aggregates in styrene-butadiene rubber (SBR) were observed using ptychographic X-ray computed tomography (PXCT). The rubber composites were illuminated with X-rays focused by total reflection focusing mirrors, and the ptychographic di…
View article: Towards sub-10 nm spatial resolution by tender X-ray ptychographic coherent diffraction imaging
Towards sub-10 nm spatial resolution by tender X-ray ptychographic coherent diffraction imaging Open
As the first experiment at BL10U in NanoTerasu, tender X-ray ptychographic coherent diffraction imaging (PCDI) was conducted using a photon energy of 3.5 keV. The ptychographic diffraction patterns from a 200 nm thick Ta test chart and a m…
View article: Coupling x-ray photon correlation spectroscopy and dynamic coherent x-ray diffraction imaging: Particle motion analysis from nano-to-micrometer scale
Coupling x-ray photon correlation spectroscopy and dynamic coherent x-ray diffraction imaging: Particle motion analysis from nano-to-micrometer scale Open
Two well-known measurement methods use coherent x rays: x-ray photon correlation spectroscopy (XPCS) and coherent x-ray diffraction imaging (CXDI). We propose and demonstrate an approach to analyze particle motion in heterogeneous solution…
View article: X-ray ptychographic and fluorescence microscopy using virtual single-pixel imaging based deconvolution with accurate probe images
X-ray ptychographic and fluorescence microscopy using virtual single-pixel imaging based deconvolution with accurate probe images Open
Simultaneous measurement of X-ray ptychography and fluorescence microscopy allows high-resolution and high-sensitivity observations of the microstructure and trace-element distribution of a sample. In this paper, we propose a method for im…
View article: High-resolution and high-sensitivity X-ray ptychographic coherent diffraction imaging using the CITIUS detector
High-resolution and high-sensitivity X-ray ptychographic coherent diffraction imaging using the CITIUS detector Open
Ptychographic coherent diffraction imaging (PCDI) is a synchrotron X-ray microscopy technique that provides high spatial resolution and a wide field of view. To improve the performance of PCDI, the performance of the synchrotron radiation …
View article: Nanoscale domain imaging of Li-rich disordered rocksalt-type cathode materials with X-ray spectroscopic ptychography
Nanoscale domain imaging of Li-rich disordered rocksalt-type cathode materials with X-ray spectroscopic ptychography Open
Domain structure in Li-rich disordered rocksalt-type cathode particles is visualized using X-ray spectroscopic ptychography and clustering analysis.
View article: Demonstration of single-frame coherent X-ray diffraction imaging using triangular aperture: Towards dynamic nanoimaging of extended objects
Demonstration of single-frame coherent X-ray diffraction imaging using triangular aperture: Towards dynamic nanoimaging of extended objects Open
Coherent diffraction imaging (CDI) is a powerful method for visualizing the structure of an object with a high spatial resolution that exceeds the performance limits of the lens. Single-frame CDI in the X-ray region has potential use for p…