Figure 3

(a) A time series of CO₂ bubbles at the junction of the microchannel. (b) Histograms of the initial diameter of CO₂ bubbles. (c) Representative micrographs of CO₂ bubbles near the outlet at the concentration of salinity (0%, 2%, 4%, 6%, 8%, 10%, 15%, and 30% NaCl). (d) Variations in size of CO₂ bubbles near the outlet at different salinities. (e) A diagram of percent changes (%∆ = (D_final − D_initial)/D_initial × 100) in average diameter of CO₂ bubbles and the graph of Henry’s constant () at different salinities.