@inproceedings{fb8eb71497464254926eb07bdd381fee,
title = "Z-contrast atom counting using the few-layer graphene sheets",
abstract = "Upon the development of the quantitative scanning transmission electron microscopy (Q-STEM), individually counting the gold atom has been achieved. The correlation of the signals to the atom quantity (N), i.e. calibration, is its crucial work One has to seek the ultra-fine mass standards, where the size-selected gold clusters rank the best recently [1]. However, practically this is difficult for light elements, since STEM intensity is proportional to Zα, where Z is atomic number of the elements and a is in the range of 1.5-1.9 depending on the detector collection angle, sample thickness, and the Debye-Waller factor of the atomic species. As a result, the light elements would have a much weaker image contrast than that of heavy elements. This could be even more difficult for the carbon particles supported by the Formvar films. Graphene layers are featured by large scale uniformity and discrete layer steps, which shed light on precision calibration of the carbon atomic scales.",
author = "Song, {F. Q.} and Qin, {Y. Y.} and Ding, {W. F.} and Liao, {K. M.} and Li, {Z. G.} and Wang, {Z. W.} and Zhou, {J. F.} and Wan, {J. G.} and Li, {Z. Y.} and Wang, {G. H.}",
year = "2010",
doi = "10.1109/IVESC.2010.5644119",
language = "英语",
isbn = "9781424466429",
series = "Proceedings - 2010 8th International Vacuum Electron Sources Conference and Nanocarbon, IVESC 2010 and NANOcarbon 2010",
pages = "406--407",
booktitle = "Proceedings - 2010 8th International Vacuum Electron Sources Conference and Nanocarbon, IVESC 2010 and NANOcarbon 2010",
note = "8th International Vacuum Electron Sources Conference, IVESC 2010 and NANOcarbon 2010 ; Conference date: 14-10-2010 Through 16-10-2010",
}