Fig. 7

Microscopy results. (a-1)~(e-1) Microscopy images of MF25, MF35, MF40, MF43 and MF47 over time. (a-2)~(e-2) Normalized average \(\:{OR}_{\text{A}\text{V}\text{G}}^{\text{n}\text{o}\text{r}\text{m}}\), normalized average probabilistic air bubble cluster \(\:{\langle{u}_{2}\rangle}_{\text{A}\text{L}\text{L}}^{\text{n}\text{o}\text{r}\text{m}}\) and normalized air bubble area ratio \(\:{S}_{\text{R}\text{A}\text{T}\text{I}\text{O}}^{\text{n}\text{o}\text{r}\text{m}}\) of MF25, MF35, MF40, MF43 and MF47 over time.