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The mechanism of elasto-inertial focusing in the square channel. (a) Experimental results for focusing positions of 10 μm particles. (b) Numerical results indicating the focusing positions in PEO solution for flow rates of 1 and 25 μl/min. (c) and (d) The inertial and elasticity force vector plot in the cross section of the channel. (e) and (f) Nondimensional applied elasto-inertial forces on the particles for flow rates of 1 and 25 μl/min, respectively.
