
Engineering applications 355
(a
b)
(c) (d)
5
4
4
3
3
2
y (mm)
1
1
2
x (mm)
C
1
(mM)
C
2
(mM)
C
3
(mM)
C
f
(mM)
0
10
10.05
1.02
× 10
–4
10.05
10
9.85
0
–0.1
–0.2
–0.3
–0.4
9.9
9.95
Cumulative Mobile
Ions Concn. (mM)
0.4
0.3
0.2
0.1
0
1.015
1.01
1.005
10.1
10.15
0
0.1
0.2
0.3
10.2
0
5
4
4
3
3
2
y (mm)
1
1
2
x (mm)
0
0
4
5
4
3
3
2
y (mm)
1
1
2
x (mm)
0
0
5
5
4
4
3
3
2
y (mm)
1
1
2
x (mm)
0
0
5
5
4
4
3
3
2
y (mm)
1
1
2
x (mm)
0
0
5
4
3
2
3
4
5
y (mm)
1
1
2
x (mm)
0
0
Figure 7.43 Proles of various eld variables after solving 2-D pH-sensitive hydrogel
for pH = 7, and E = 25, 29, and 36, where different proles are given as (a),
(b), (c), (d), ψ (e), and distribution of cumulative mobile ions (f). (From S.
Mulay and L. Li. Modelling and Simulati