Biomedical Engineering Reference
In-Depth Information
polar plot. Such a broad stroke analysis is exemplified with Fig. 15, where
the shaded area roughly stands for either purely elastic monolayer or purely
viscous monolayers, both within certain ranges of
.
Although we have skipped a great deal of technical details pertaining to
the results in Fig. 14, we must note two points here. First, the data are av-
ε
d
and
κ
<
15 mN m
-1
,
which is the same as Fig. 16D but with error bars. Values for different surface pressures
have been normalized to the conditions and limits of Fig. 16 with 1 standard deviation
confidence intervals for the average of three wave vectors. Surface pressure increases
counterclockwise in
A
and clockwise in
B
. Complete collapse of the film occurs at a sur-
face pressure around 23.5 mN m
-1
. On the plot B, this corresponds to the cluster of points
at
f
s,c
vs.
f
s
for PVAc on water at 23
◦
Cfor
<
15 mN m
-1
(
A
)and
Fig. 17
∆
Π
Π
2 mN m
-1
10
5
2 mN s m
-1
ε
d
around 13
±
and
κ
·
≈
6
±
