Figure shows three-dimensionally (3D) reconstructed images of the capsular DNA coacervates formed on the microdroplet interface. The images were obtained using a confocal laser scanning microscope (CLSM) at various DNA concentrations and cooling rates. As shown in Figures , each concentration of ssDNA1, ssDNA2, and ssDNA3 was CDNA= 10 μM. It was found that round porous (Figures and) and non-porous (Figures and) capsular DNA coacervates were formed at each cooling rate, rc= 0.01 and 0.5°C s -1 , respectively. Figure summarizes the formation percentages of porous/non-porous structures of capsular DNA coacervates depending on the cooling rate rc. When rc ≤ 0.05°C s -1 , the round-porous structures were more frequent than non-porous structures. In contrast, the nonporous structures were formed more frequently when rc≥ 0.1°C s -1 . Capsular DNA coacervates tended to be more homogeneous (i.e., non-porous) at faster cooling rates.