Atomistic manipulation of reversible oxidation and reduction in Ag with an electron beam

Huaping Sheng, He Zheng, Shuangfeng Jia, Maria K.Y. Chan, Tijana Rajh, Jianbo Wang, Jianguo Wen

Research output: Contribution to journalArticlepeer-review

14 Scopus citations


Employing electrons for direct control of a nanoscale reaction is highly desirable since it enables fabrication of nanostructures with different properties at atomic resolution and with flexibility of dimensions and location. Here, applying in situ transmission electron microscopy, we show the reversible oxidation and reduction kinetics in Ag, well controlled by changing the dose rate of the electron beam. Aberration-corrected high-resolution transmission electron microscopy observation reveals that O atoms are preferably inserted and extracted along the {111} close-packed planes of Ag, leading to the nucleation and decomposition of nanoscale Ag2O islands on the Ag substrate. By controlling the electron beam size and dose rate, we demonstrated the fabrication of an array of 3 nm Ag2O nanodots in an Ag matrix. Our results open a new pathway to manipulate an atomistic reaction with an electron beam towards the precise fabrication of nanostructures for device applications.

Original languageEnglish (US)
Pages (from-to)10756-10762
Number of pages7
Issue number22
StatePublished - Jun 14 2019
Externally publishedYes

ASJC Scopus subject areas

  • General Materials Science


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