Figure Captions List
Figure 1. (a) The schematic diagram of the standard manual operation; (b) Microbubbles generated by standard manual methods
Figure 2. (a) The sketch of the imaging system; (b) The flow test section
Figure 3. The images of microbubbles captured under the standard manual operation
Figure 4. The number density of bubbles under the standard manual operation
Figure 5. The statistical histograms of the BSD manual operation: (a) M-1; (b) M-2
Figure 6. Effect of different standard manual operations on BSD: (a) bubbles generated by M-1; (b) bubbles generated by M-2; (c) bubbles generated by M-3; (d) bubbles generated by M-4
Figure 7. Reproducibility of (a) The BSD averaged about M-1, M-2, M-3, M-4, M-5, and M-6, respectively; (b) mean bubble size measurements; (c) the Sauter mean bubble diameters; (d) bubble size standard deviations