Mechanism of particle concentration at the tips of sharp-edge microstructures of the acoustofluidic device (IMAGE)

Beijing Institute of Technology Press Co., Ltd

Mechanism of particle concentration at the tips of sharp-edge microstructures of the acoustofluidic device

Caption

(A) Geometry of the microfluidic channel and the sharp-edge structure in the acoustofluidic device. A detailed view of the structure is provided in the figure. (B) Simulated acoustic velocity field within the microfluidic channel, showing a maximum velocity at the tip of the sharp-edge structure. (C) Simulated acoustic streaming velocity field with an input background flow of 0.1 mm/s from left to right. (D) Simulated acoustic streaming lines, revealing a single vortex around the sharp edge. (E) Calculated Gor’kov potential distribution near the sharp-edge structure. Scale bars, 400 μm (B to E). (F) Distributions of the Gor’kov potential-induced acoustic radiation force (Frad) and acoustic streaming-induced drag force (Fdrag) around a sharp-edge structure. Scale bar, 20 μm.

Credit

Tony Jun Huang, The Thomas Lord Department of Mechanical Engineering and Materials, Duke University.

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