Fig. 3: Parametric studies of acoustic and flow focusing.

a Quantitative rule of the particle deviation level in the microfluidic channel. b Impact of different sheath and medullary fluid flow rate ratios on particles focusing without acoustic focusing, and the total flow rate in the control focusing flow channel is 10 μL/min. c Impact of different SAW powers with the frequency of 19.80 MHz and the flow rate ratio is 1:1. d Impact of different SAW frequencies on particles focusing with the SAW power of 0 dBm and the flow rate ratio is 1:1.