Figure 13.

(a) Schematic of the experiential setup used to characterize the reagent delivery system. The microneedle (OD = 90 µm, ID = 20 µm, length = 80 mm) connected to the reagent chamber (ID = 0.5 (mm), OD = 1 (mm), length = 25 (mm)). (b) The characterization of the reagent delivery system. For each pulse 200 kPa was applied for a duration of 1 s. In average, 160 pL reagent can be delivered for each pulses. By controlling the duration of the pulses or the pressure level, the delivered volume can be controlled to achieve lower injected reagent per pulses.