Mechanochemistry of shock-induced nanobubble collapse near silica in water

K. Nomura, R. K. Kalia, A. Nakano, P. Vashishta, A. C.T. Van Duin

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Abstract

We have performed million-atom reactive molecular dynamics simulations to study shock-induced bubble collapse near an amorphous silica surface. We observe the formation of water jet during the bubble collapse, which collides on to the silica surface causing a hemispherical pit. Fragment analysis reveals substantial ionization activities in water followed by rapid increase in H 3O + population during the pit formation. We have identified a shock-induced H 3O + ion formation mechanism, in which transient five-coordinated silicon atoms play a pivotal role.

Original languageEnglish (US)
Article number073108
JournalApplied Physics Letters
Volume101
Issue number7
DOIs
StatePublished - Aug 13 2012

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All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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