OU NanoLab/NSF NUE/Bumm & Johnson
Example: the Kelvin Effect on Water Drops
1.4238
1.1118
1.0360
1.0107
1.0035
1.0011
P/P
0
+42
+11
+3.6
+1.1
+0.35
+0.11
Δ
P (%)
0.003
0.01
0.03
0.1
0.3
1
r
p
(
μ
m)
Equilibrium Vapor Pressure Increase Over Pure Water Droplet
as a Function of Droplet Radius at
T
= 25 C
0.7023
0.8994
0.9653
0.9895
0.9964
0.9989
P/P
0
−
30
−
10
−
3.5
−
1.1
−
0.35
−
0.11
Δ
P (%)
0.003
0.01
0.03
0.1
0.3
1
r
p
(
μ
m)
Equilibrium Vapor Pressure Decrease of Pure Water inside a Pore
as a Function of Pore Radius at
T
= 25 C