实验室源X射线叠层成像
X-ray Ptychography with a Laboratory Source
摘要：
近年来，X射线重叠关联成像技术在大规模同步辐射光源上已经彻底改变了纳米级相衬成像。我们在这里提出的第一个成功的示范技术在一个小规模的实验室设置。我们进行了一项实验，与液体金属射流X射线源和一个光子计数探测器具有高光谱分辨率。该实验使用5微米的光斑尺寸来产生具有亚微米空间分辨率的西门子星形测试图案的重叠关联相位图像。所提出的结果和方法显示了如何高分辨率相衬成像，现在可以在小规模的实验室来源世界各地。
英文摘要：
X-ray ptychography has revolutionised nanoscale phase contrast imaging at large-scale synchrotron sources in recent years. We present here the first successful demonstration of the technique in a small-scale laboratory setting. We conducted an experiment with a liquid metal-jet X-ray source and a single photon-counting detector with a high spectral resolution. The experiment used a spot size of 5 microns to produce a ptychographic phase image of a Siemens star test pattern with a sub-micron spatial resolution. The result and methodology presented show how high-resolution phase contrast imaging can now be performed at small-scale laboratory sources worldwide.
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