Biomedical Engineering Reference
In-Depth Information
§
·
§
·
t
It
()
I
1 exp
(20)
¨
¸
¨
¸
on,max
¨
¸
IJ
©
¹
©
¹
on
with the initial maximum current
I
on,max
and the time constant
IJ
on
defined as:
GI
el
p,0
I
(21)
on,max
I
p,0
GG
el
p
*
V
C
p
IJ
(22)
on
I
p,0
GG
p
el
V
The measured current after switching the light source off is de-
scribed by Eq. (23):
§
·
t
It
()
I
exp
(23)
¨
¸
off ,max
IJ
©
¹
off
with the maximum current when switching the light off (
I
off,max
)
and its time constant
IJ
off
:
GI
el
p,0
I
(24)
off ,max
I
GG
V
p,0
el
p
*
C
p
IJ
.
(25)
off
GG
p
el
Based on these equations, we carried out simulations, which
take the electrical properties of the pore-spanning membrane and
electrolyte into account, as determined by impedance analysis.
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