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The understanding of cavitation from nanoparticles has been hindered by the inability to control nanobubble size. We present a method to manufacture nanoparticles with a tunable single hemispherical depression (nanocups) of mean diameter 90, 260, or 650 nm entrapping a nanobubble. A modified Rayleigh-Plesset crevice model predicts the inertial cavitation threshold as a function of cavity size and frequency, and is verified experimentally. The ability to tune cavitation nanonuclei and predict their behavior will be useful for applications ranging from cancer therapy to ultrasonic cleaning.

Original publication

DOI

10.1103/physreve.92.023019

Type

Journal article

Journal

Physical review. E, Statistical, nonlinear, and soft matter physics

Publication Date

19/08/2015

Volume

92

Addresses

Institute of Biomedical Engineering, University of Oxford, Oxford OX3 7DQ, United Kingdom.

Keywords

Gases, Microscopy, Electron, Transmission, Microbubbles, Nanotechnology, Ultrasonics, Models, Theoretical, Nanoparticles