title: Structure and dynamics of shock-induced nanobubble collapse in water.
abstract: Shock-induced collapse of nanobubbles in water is investigated with molecular dynamics simulations based on a reactive force field. We observe a focused jet at the onset of bubble shrinkage and a secondary shock wave upon bubble collapse. The jet length scales linearly with the nanobubble radius, as observed in experiments on micron-to-millimeter size bubbles. Shock induces dramatic structural changes, including an ice-VII-like structural motif at a particle velocity of 1  km/s. The incipient ice VII formation and the calculated Hugoniot curve are in good agreement with experimental results.
authors.affiliation: Collaboratory for Advanced Computing and Simulations, University of Southern California, Los Angeles, California 90089-0242, USA.
authors.forename: M
authors.initials: M
authors.lastname: Vedadi
authors.forename: A
authors.initials: A
authors.lastname: Choubey
authors.forename: K
authors.initials: K
authors.lastname: Nomura
authors.forename: R K
authors.initials: RK
authors.lastname: Kalia
authors.forename: A
authors.initials: A
authors.lastname: Nakano
authors.forename: P
authors.initials: P
authors.lastname: Vashishta
authors.forename: A C T
authors.initials: AC
authors.lastname: van Duin