Scalable, large area compound array refractive lens for hard X-rays
Scalable, large area compound array refractive lens for hard X-rays
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DOI：
10.1063/1.5022748
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发表时间：
2018-04-09
影响因子：
4
通讯作者：
Plech, Anton
中科院分区：
文献类型：
--
作者：
Reich, Stefan;Rolo, Tomy dos Santos;Plech, Anton
我们展示了一个二维复合阵列折射透镜（CARL）的多对比度X射线成像的制造。CARL由六个堆叠的聚酰亚胺箔，每个显示一个2D阵列的透镜与65 μ m的间距，旨在为亚微米结构的灵敏度与（几）微米的分辨率，通过相位和散射对比度在多个千电子伏的传感。抛物面透镜由抛物面针在箔上的凹痕形成。通过拍摄液体中脉冲激光烧蚀的动力学，证明了快速单次曝光多对比度成像的能力。三个对比度通道，吸收，微分相位和散射，成像的时间分辨率为25 μ s。通过改变样品-检测器距离，可以区分纳米颗粒和微泡。由AIP出版社出版。
We demonstrate the fabrication of a 2D Compound Array Refractive Lens (CARL) for multi-contrast X-ray imaging. The CARL consists of six stacked polyimide foils with each displaying a 2D array of lenses with a 65 mu m pitch aiming for a sensitivity on sub-micrometer structures with a (few-)micrometer resolution in sensing through phase and scattering contrast at multiple keV. The parabolic lenses are formed by indents in the foils by a paraboloid needle. The ability for fast single-exposure multi-contrast imaging is demonstrated by filming the kinetics of pulsed laser ablation in liquid. The three contrast channels, absorption, differential phase, and scattering, are imaged with a time resolution of 25 mu s. By changing the sample-detector distance, it is possible to distinguish between nanoparticles and microbubbles. Published by AIP Publishing.