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. Author manuscript; available in PMC: 2013 May 1.
Published in final edited form as: Bubble Sci Eng Technol. 2012 May;4(1):12–20. doi: 10.1179/1758897912Y.0000000004

Figure 4.

Figure 4

Expected zones of production of dual-layer microbubbles in the 4- and the 8-channel device. The 8-channel arrangement expectedly requires more continuous phase flow to achieve stable generation, while the 4-channel arrangement requires more dispersed phase pressure due to increased outlet resistance.