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
.
