We constructed a high-speed X-ray projection microscope at beamline 9D of the Pohang Light Source-II (PLS-II). The microscope was able to take X-ray projection micrographs with a submil-lisecond exposure time by using whitebeam X-rays from the PLS-II bending-magnet synchrotron radiation. It also takes advantage of edge enhancement in phase-contrast imaging, which significantly improves the visibility of soft materials and microfluids. Using the microscope, we captured the spreading of a water droplet on a hydrophilic and oleophilic nonwoven membrane at 1,264 frames per second. The computed tomography (CT), which visualized a three-dimensional wooden structure at a spatial resolution of 2.7 µm, took 2.5 s for scanning.

中文翻译：

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浦项光源-II 光束线 9D 处的高速 X 射线投影显微镜

我们在浦项光源-II (PLS-II) 的光束线 9D 处构建了一个高速 X 射线投影显微镜。通过使用来自 PLS-II 弯曲磁铁同步加速器辐射的白束 X 射线，显微镜能够以亚毫秒曝光时间拍摄 X 射线投影显微照片。它还利用相衬成像中的边缘增强，显着提高了软材料和微流体的可见性。使用显微镜，我们以每秒 1,264 帧的速度捕捉到水滴在亲水亲油无纺布膜上的扩散。计算机断层扫描 (CT) 以 2.7 µm 的空间分辨率可视化了三维木结构，扫描时间为 2.5 秒。