Crystallographic image processing approach to crystal structure determination
文献类型：期刊论文
| 作者 | Li, FH |
| 刊名 | JOURNAL OF MICROSCOPY-OXFORD
 |
| 出版日期 | 1998 |
| 卷号 | 190页码:249 |
| 关键词 | RESOLUTION ELECTRON-MICROSCOPY ENTROPY MAXIMIZATION DIFFRACTION DECONVOLUTION RESTORATION MICROGRAPH |
| ISSN号 | 0022-2720 |
| 通讯作者 | Li, FH: Chinese Acad Sci, Inst Phys, POB 603, Beijing 100080, Peoples R China. |
| 中文摘要 | It is shown that the crystallographic image-processing technique based on the weak-phase object approximation and on the combination of high-resolution electron microscopy and electron diffraction is applicable to crystal structure determination, The technique consists of two stages: image deconvolution and phase extension. In the first stage an image taken at an arbitrary defocus condition can be transformed into the structure image with the resolution limited by the resolution of the electron microscope. In the second stage the image resolution is enhanced to the diffraction resolution limit so that most unoverlapped atoms can be resolved individually in the final image, Although the experimental diffraction intensities are available for the image deconvolution, they must be corrected for the phase extension. The proposed empirical method of electron diffraction intensity correction seems effective for obtaining a set of corrected diffraction intensities which are approximately equal to square structure factors. When the crystal structure under examination belongs to a known typical type, it is easy to propose the structure model by referring to the deconvoluted image which reveals the low-resolution structure, and the high-resolution structure can also be determined by image simulation. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-09-17 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/35475]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Li, FH. Crystallographic image processing approach to crystal structure determination[J]. JOURNAL OF MICROSCOPY-OXFORD,1998,190:249. |
| APA | Li, FH.(1998).Crystallographic image processing approach to crystal structure determination.JOURNAL OF MICROSCOPY-OXFORD,190,249. |
| MLA | Li, FH."Crystallographic image processing approach to crystal structure determination".JOURNAL OF MICROSCOPY-OXFORD 190(1998):249. |
入库方式： OAI收割
来源：物理研究所
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