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Particle distributions in bi-fluid flow. (a) Captured image under UV light when no acoustic field applied, particles flow within its original solvent (DI water colored red). (b) Captured image under UV light when the acoustic field applied, particles are transported across the fluid interface. (c) Particle distribution and fluorescent density distribution along a cross section (2200 μm) downstream. Sample size: 100 (acoustic field applied) and 120 (no acoustic field applied).
