[1]雷耀虎,黄建衡,刘鑫,等.X射线微分相衬成像系统莫尔条纹对比度的改善[J].深圳大学学报理工版,2016,33(5):506-510.[doi:10.3724/SP.J.1249.2016.05506]
　Lei Yaohu,Huang Jianheng,Liu Xin,et al.Improvement of visibility of moiré fringe in X-ray differential phase-contrast imaging[J].Journal of Shenzhen University Science and Engineering,2016,33(5):506-510.[doi:10.3724/SP.J.1249.2016.05506]
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X射线微分相衬成像系统莫尔条纹对比度的改善()
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《深圳大学学报理工版》[ISSN:1000-2618/CN:44-1401/N]

卷:
第33卷
期数:
2016年第5期
页码:
506-510
栏目:
光电工程
出版日期:
2016-09-24

文章信息/Info

Title:
Improvement of visibility of moiré fringe in X-ray differential phase-contrast imaging
作者:
雷耀虎; 黄建衡; 刘鑫; 李冀; 郭金川; 牛憨笨
深圳大学光电工程学院，光电子器件与系统教育部/广东省重点实验室，广东深圳 518060
Author(s):
Lei Yaohu;  Huang Jianheng;  Liu Xin;  Li Ji;  Guo Jinchuan;  and Niu Hanben
College of Optoelectronic Engineering, Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, Shenzhen University, Shenzhen 518060, Guangdong Province, P.R.China
关键词:
光学工程; X射线; 相衬; 吸收光栅; 微铸造; 莫尔条纹; 铋
Keywords:
optical engineering;  X-ray;  phase contrast;  absorption grating;  micro-casting;  moiré fringe;  bismuth
分类号:
O 434.19; O 647.5
DOI:
10.3724/SP.J.1249.2016.05506
文献标志码:
A
摘要:
为制作高质量的铋吸收光栅以提高X射线微分相衬成像系统性能，针对表面改性环节对微铸造技术进行改进,以Bi2O3取代SiO2作为改进的浸润层．在周期为3 μm、深度为150 μm的分析光栅结构上制作了具有高填充率的分析光栅，获得了该光栅的扫描电子显微镜照片．为进一步表明改进微铸造技术制作分析光栅的优越性，与改进前的分析光栅进行对比．将两种光栅先后置于X射线微分干涉相衬成像系统中，分别获取了系统莫尔条纹．从最终的条纹对比度上判断，改进后的微铸造技术制作的分析光栅填充率明显提高．
Abstract:
To fabricate high performance Bi absorption gratings for use in X-ray differential phase-contrast imaging (DPCI), the micro-casting method was improved via surface modification. Bi2O3 was used in place of SiO2 as an improved wetting layer. A scanning electron microscopy shows that a high filling-ratio analyzer grating with a period of 3 μm and a depth of 150 μm is obtained. Furthermore, the superiority of the presented analyzer grating to the one fabricated using the traditional micro-casting method is revealed through a comparison of moiré patterns. These tests demonstrate an enhancement to the micro-casting method for the fabrication of absorption gratings.

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更新日期/Last Update: 2016-09-08