FIG. 5.

Blood flow velocity for 8 μl of blood in: (a) capillary flow of blood as a function of time inside the 3D-printed microfluidic channel; (b) velocity at the main channel (with and without side channels); and (c) side channels with 45°, 90°, and 135°, respectively. All the main channels were 0.6 × 0.6 × 11 mm³ (w, d, l) with an inlet of 2.5 × 1 × 2.5 mm³ and oxygen plasma treatment of 10 W, 0.24 mbar during 1 min. Flow velocity recorded with a high velocity CCD camera and acquisition of 300 frames/50 ms of interval.