Next, we combine the thermodynamic interpretation with the reaction kinetics. We consider the reaction species flow thorough the liquid droplet, as shown in Fig. 6. We simplify the reaction kinetics to include only incorporation and crystallization. Transportation in the vapor phase and Resiquimod in the liquid phase of the reaction species are omitted because their effects are negligible . For incorporation, according to previous work, we should take desorption from the droplet surface, incorporation from the nanowire surface diffusion, and other processes into consideration .