Fig. 4
Droplet generation and spacing using dual-nozzle microfluidic device. Microscope image of droplet generation at first nozzle (a) and control of droplet distance at second nozzle (b). Scale bars are 200 µm. Graphs of diameter of droplets generated at first nozzle against water flowrate (c), and oil flowrate (d), and bar diagram of dispensed droplet diameter at device outlet using a single nozzle and the dual-nozzle setup (e)