Electron beam-induced athermal nanowelding of crossing SiO _x amorphous nanowires.

ABSTRACT: Nanowelding of two crossing amorphous SiO _x nanowires induced by uniform electron beam irradiation at room temperature was demonstrated in an in situ transmission electron microscope. It was observed that, under the electron beam irradiation, the amorphous nanowires became unstable driven by nanocurvature non-uniformly distributed over the nanowire surface centered around the crossing site of the nanowires. Such an instability of the nanowires could give rise to an athermal fast and massive migration of atoms nearby the surface centered around the crossing site, and thus the two crossing nanowires become gradually welded. The existing knock-on mechanism and molecular dynamics simulations seem inadequate to explain the observed athermal migration of the surface atom

SUBMITTER: Zheng Y 

PROVIDER: S-EPMC8981572 | biostudies-literature | 2022 Feb

REPOSITORIES: biostudies-literature