412569.fig.003
Figure 3: The solution 𝜓 ( 𝑢 ) = l n ( ( 1 + d n ( 𝑢 , 𝑘 ) ) / ( 1 d n ( 𝑢 , 𝑘 ) ) ) for the Poisson Boltzmann equation. The parameters are 𝑘 2 = 0 . 7 5 and 𝐾 = 2 . 1 5 6 .