Fig. 1

Design and fabrication of the microfluidic dual-nozzle device. Schematic of the dual-nozzle device (a), magnified schematic of the first (b), and second nozzle (c). Microscope images of the fabricated first (d), and second nozzle (e). For illustration purposes, the channels are filled with fluorescein solution. Scale bars are 200 µm. Photograph of the fabricated PDMS device, for illustration purposes the channels are filled with red dye (f)