Numerical simulation of the structure of DNA coacervates has been performed by changing two parameters, the cooling rate 𝑘 C and the friction constant 𝜁 . Figure shows the numerically simulated structure of the DNA coacervate. The friction constant (horizontal axis) decreased from left to right, corresponding to an increase in the W/O microdroplet size. The simulation results show that the DNA coacervates tend to be more porous in the case of a smaller frictional force, which suggests that more porous DNA coacervates are obtained in the case of larger microdroplets, as shown in Figure . When the cooling rate 𝑘 C (vertical axis)