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Title: High-speed jetting and spray formation from bubble collapse
Authors: Karri, B.
Avila, S.R.G.
Loke, Y.C.
O'Shea, S.J.
Klaseboer, E.
Khoo, B.C. 
Ohl, C.-D.
Issue Date: 17-Jan-2012
Citation: Karri, B., Avila, S.R.G., Loke, Y.C., O'Shea, S.J., Klaseboer, E., Khoo, B.C., Ohl, C.-D. (2012-01-17). High-speed jetting and spray formation from bubble collapse. Physical Review E - Statistical, Nonlinear, and Soft Matter Physics 85 (1) : -. ScholarBank@NUS Repository.
Abstract: A method to create impacting jets at the micrometer length scale by means of a collapsing cavitation bubble is presented. A focused shock wave from a lithotripter leads to the nucleation of a cavitation bubble below a hole of 25 μm diameter etched in a silicon plate. The plate is placed at an air-water interface. The expansion and collapse of the bubble leads to two separate jets-an initial slow jet of velocity ∼10 m/s and a later faster jet of velocity ∼50 m/s. The jets subsequently impact coaxially, resulting in a circular sheet of liquid in the plane perpendicular to their axis. The sheet is characterized by a ring of droplets at its rim and breaks up into a spray as the shock pressure is increased. The results demonstrate an approach to create a high-speed jet and fine spray on demand at the micrometer scale. © 2012 American Physical Society.
Source Title: Physical Review E - Statistical, Nonlinear, and Soft Matter Physics
ISSN: 15393755
DOI: 10.1103/PhysRevE.85.015303
Appears in Collections:Staff Publications

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