Generally, DNA annealing processes produce a homogeneous DNA structure because it is thermodynamically the most stable structure. Thus, it was expected that a slower cooling rate (annealing rate) would make DNA coacervates non-porous (i.e., homogeneous), and a faster cooling rate would make them porous, but the obtained results showed the opposite. Therefore, it was speculated that the porous structure was not formed via thermodynamic equilibrium; the kinetic processes of DNA coacervation/gelation under non-equilibrium conditions or the interactions with the microdroplet interface must have affected the porous/non-porous structure formations.