ICCAS OpenIR
Ratio-contrast imaging of dual-energy absorption for element mapping with a scanning transmission X-ray microscope
Zhang, X. Z.1; Xu, Z. J.1; Tai, R. Z.1; Zhen, X. J.1; Wang, Y.1; Guo, Z.1; Yan, R.1; Chang, R.1; Wang, B.2,3; Li, M.2,3; Zhao, J.4; Gao, F.4
2010-11-01
Source PublicationJOURNAL OF SYNCHROTRON RADIATION
ISSN0909-0495
Volume17Pages:804-809
AbstractThe detection of chemical mapping with a spatial resolution of 30 nm has been achieved with a scanning transmission X-ray microscope at the Shanghai Synchrotron Radiation Facility. For each specimen, two absorption images were scanned separately with energies E (1) and E (2): E (1) was focused on the absorption edge of the chosen element and E (2) was focused below the edge. A K-edge division method is proposed and applied to obtain the element mapping. Compared with the frequently used K-edge subtraction method, this ratio-contrast method is shown to be more accurate and sensitive in identifying the elements of interest, where the definition of the contrast threshold is simple and clear in physics. Several examples are presented to illustrate the effectiveness of the method.
KeywordX-ray Absorption Edge X-ray Microscopy Element Microanalysis
DOI10.1107/S0909049510031250
Indexed BySCI
Language英语
WOS IDWOS:000283599600014
PublisherWILEY-BLACKWELL
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/70388
Collection中国科学院化学研究所
Corresponding AuthorTai, R. Z.
Affiliation1.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201204, Peoples R China
2.Chinese Acad Sci, Inst High Energy Phys, CAS Key Lab Biomed Effects Nanomat & Nanosafety, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Inst High Energy Phys, Key Lab Nucl Analyt Tech, Beijing 100049, Peoples R China
4.Chinese Acad Sci, Inst Chem, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Zhang, X. Z.,Xu, Z. J.,Tai, R. Z.,et al. Ratio-contrast imaging of dual-energy absorption for element mapping with a scanning transmission X-ray microscope[J]. JOURNAL OF SYNCHROTRON RADIATION,2010,17:804-809.
APA Zhang, X. Z..,Xu, Z. J..,Tai, R. Z..,Zhen, X. J..,Wang, Y..,...&Gao, F..(2010).Ratio-contrast imaging of dual-energy absorption for element mapping with a scanning transmission X-ray microscope.JOURNAL OF SYNCHROTRON RADIATION,17,804-809.
MLA Zhang, X. Z.,et al."Ratio-contrast imaging of dual-energy absorption for element mapping with a scanning transmission X-ray microscope".JOURNAL OF SYNCHROTRON RADIATION 17(2010):804-809.
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