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. Author manuscript; available in PMC: 2008 Feb 23.
Published in final edited form as: Lab Chip. 2007 Mar 8;7(4):463–468. doi: 10.1039/b701481n

Fig. 3.

Fig. 3

(a) Schematic view of the microfluidic flow-focusing device. All channels have a rectangular cross section and a height of 25 μm. The widths of the liquid and gas inlet channels are {50, 75, 100 μm} and {35, 50 μm} respectively. The devices feature an expanding nozzle with a range of orifice widths {7, 10, 15, 20, 25 μm}. The outlet channel connects to an open reservoir for bubble collection. (b) Main functional area with a 7 μm orifice and 3 μm microbubble generation. The arrows indicate direction of flow. (c) Magnified images of liquid inlet (left) and gas inlet (right) filtering channels.