Biomedical Engineering Reference
In-Depth Information
Fig. 7.5
Measurement of nucleation kinetics parameters. (
a
) The typical size distribution of
subcritical nuclei versus time (
600 Hz.). (
b
)
n
*
(
t
) versus time. After the
induction time,
n
*
(
t
) becomes stable. The critical size can be determined. (
c
) The number of nuclei
for which the size is larger than the critical size in different time. We can measure the nucleation
rate in the unit area according to the slope of linear fitting of this
curve
.(
d
) The nucleation rate
under the different supersaturation (driving force). The
straight line
fitting is based on (
7.39
).
From (
7.39
), we also can get the line tension of interface. The value of
10
4
E
D
2.6
V/m,
f
D
step
is 0.50
kT
/
a
(
a
is the
diameter of colloidal particles), which is in agreement with the measurements. For more details,
see Ref. [
15
]. Reprinted with permission from Ref. [
13
] © 2004 Nature Publishing Group
