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Statistical Study of Beam-Induced Motion of Gold Adatoms by a Scanning TEM

Published online by Cambridge University Press:  08 May 2015

Wei Zhou ,
Xin Li  and
Guo-zhen Zhu
Wei Zhou
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
Xin Li
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
Guo-zhen Zhu*
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
*
*Corresponding author. [email protected]
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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).

Keywords

beam-induced motionadatomsHAADFstatistical study
Type
Materials Applications
Information
Microscopy and Microanalysis , Volume 21 , Issue 3 , June 2015 , pp. 617 - 625
Copyright
© Microscopy Society of America 2015 

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