Electron-beam induced electric-hydraulic expansion in a silica-shelled gallium microball-nanotube structure

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

7 Scopus Citations
View graph of relations

Author(s)

  • Y. H. Gao
  • M. Sun
  • J. Su
  • D. Golberg
  • Y. Bando
  • X. F. Duan

Detail(s)

Original languageEnglish
Article number83112
Journal / PublicationApplied Physics Letters
Volume99
Issue number8
Publication statusPublished - 22 Aug 2011
Externally publishedYes

Abstract

Heteroshape-heteroscale structure of silica-shelled Ga microball-nanotube was fabricated. Under in situ electron-beam irradiation, an abnormally large and fast expansion of Ga was observed. Failed by a sole routine heating effect of electron-beam, the expansion was explained by an electric-hydraulic expansion effect taking into account a huge inner pressure induced by the repelling Coulomb force of positively charged Ga ions on the Ga microball surface. The ions were accumulated due to knocking-out of Ga electrons under irradiation and shielding effect of a silica shell which prevents the charge balance restoration. A circuit model is proposed to calculate the accumulation of Ga ions. © 2011 American Institute of Physics.

Citation Format(s)

Electron-beam induced electric-hydraulic expansion in a silica-shelled gallium microball-nanotube structure. / Gao, Y. H.; Sun, M.; Su, J.; Zhi, C. Y.; Golberg, D.; Bando, Y.; Duan, X. F.

In: Applied Physics Letters, Vol. 99, No. 8, 83112, 22.08.2011.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review