Nano Home

NANOlab Center of Excellence literature database

Home |  Show All |  Simple Search |  Advanced Search
Quick Search:
1–1 of 1 record found matching your query (RSS | history):
toggle visibility
Search within Results:
Display Options:
Select All    Deselect All << 1 >>
List View
 | 
Citations
 | 
Details
   print
  Record Links
Author Hao, Y.; de Backer, A.; Findlay, S.D.; Van Aert, S. pdf  url
doi  openurl
  Title Towards atom counting from first moment STEM images : methodology and possibilities Type A1 Journal article
  Year (down) 2025 Publication Ultramicroscopy Abbreviated Journal  
  Volume 268 Issue Pages 114066-11  
  Keywords A1 Journal article; Electron microscopy for materials research (EMAT)  
  Abstract Through a simulation-based study we develop a statistical model-based quantification method for atomic resolution first moment scanning transmission electron microscopy (STEM) images. This method uses the uniformly weighted least squares estimator to determine the unknown structure parameters of the images and to isolate contributions from individual atomic columns. In this way, a quantification of the projected potential per atomic column is achieved. Since the integrated projected potential of an atomic column scales linearly with the number of atoms it contains, it can serve as a basis for atom counting. The performance of atom counting from first moment STEM imaging is compared to that from traditional HAADF STEM in the presence of noise. Through this comparison, we demonstrate the advantage of first moment STEM images to attain more precise atom counts. Finally, we compare the integrated potential extracted from first-moment images of a wedge-shaped sample to those values from the bulk crystal. The excellent agreement found between these values proves the robustness of using bulk crystal simulations as a reference library. This enables atom counting for samples with different shapes by comparison with these library values.  
  Address  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language Wos WOS:001355614700001 Publication Date 2024-10-28  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0304-3991 ISBN Additional Links UA library record; WoS full record  
  Impact Factor Times cited Open Access  
  Notes Approved no  
  Call Number UA @ admin @ c:irua:210298 Serial 9468  
Permanent link to this record
Select All    Deselect All << 1 >>
List View
 | 
Citations
 | 
Details
   print
toggle visibility
Save Citations:
Export Records:
Home CQL Search  |  Library Search  |  Show Record  |  Extract Citations Help