Figure 6a shows the mold core used

Figure 6a shows the mold core used in the microinjection molding experiment. In this example, three electroformed nickel SMMs were assembled in the center of the mold core.Also,two SMMs for the formation of inlet/outlet reservoirs were inserted at both sides of the assembled nickel SMMs.In this manner, both the various convex microstructures with half-circular cross-sections and the protruded rectangular parts were constructed on the surface of the mold core. The prepared mold core was installed on the stationary platen of the mold base as shown in Fig. 6b. The moving platen of the mold base was designed to have another mold core with a square cavity of 35 mm 3 35 mm 3 2 mm. During the microinjection molding process, two platens were closed to form the square cavity having the convex microstructures and the rectangular parts on its one surface. The closed cavity was filled with a molten polymer of COC under the prescribed processing conditions. After one cycle of microinjection molding such as filling, packing, cooling, and demolding, the microinjection-molded square plate could be obtained as shown in Fig. 6c. As the reverse features of the cavity surface were transcribed on the molded part, the half-circular microchannel array with different diameters and two rectangular reservoir parts were formed on the surface.