title: Statistical Study of Beam-Induced Motion of Gold Adatoms by a Scanning TEM.
abstract: In order to achieve reliable structural characterization by transmission electron microscopy, beam-induced structural changes should be clarified for any target material system. As an example, the movement of heavy adatoms on a thin carbon support has been repeatedly reported under the electron beam while the underlying reason for such motion is still in debate. By applying statistical analysis to the group behavior of gold adatoms, we investigated their motion under different beam conditions and detected features corresponding to beam-induced motion, under typical scanning transmission electron microscopy observation conditions. Our results are consistent with the theoretical prediction proposed by Egerton (2013).
authors.affiliation: State Key Laboratory of Metal Matrix Composites,School of Materials Science and Engineering,Shanghai Jiao Tong University,800 Dongchuan Road,Shanghai 200240,P. R. China.
authors.forename: Wei
authors.initials: W
authors.lastname: Zhou
authors.affiliation: State Key Laboratory of Metal Matrix Composites,School of Materials Science and Engineering,Shanghai Jiao Tong University,800 Dongchuan Road,Shanghai 200240,P. R. China.
authors.forename: Xin
authors.initials: X
authors.lastname: Li
authors.affiliation: State Key Laboratory of Metal Matrix Composites,School of Materials Science and Engineering,Shanghai Jiao Tong University,800 Dongchuan Road,Shanghai 200240,P. R. China.
authors.forename: Guo-zhen
authors.initials: GZ
authors.lastname: Zhu
keywords: HAADF; adatoms; beam-induced motion; statistical study