Propagation of wetting lines for various interfaces formed between oil, water, and air on a highly viscoelastic, polymeric surface were investigated. The wetting of the acrylic polymer shows complex as well as diverse patterns. Stick and break motions of the three-phase line, characteristic of its halting due to ridge formation, appeared in either advancing or receding motions, in both directions or not at all. Such experiments demonstrate the various wetting behaviors possible on a soft, viscoelastic surface. A comprehensive explanation based on the vertical capillary force component is provided, which is consistent with these as well as previous observations.

1.
P. G.
de Gennes
,
W. F.
Brochard
, and
D.
Quere
,
Capillarity and Wetting Phenomena Drops, Bubbles, Pearls, Waves
(
Springer
,
New York
,
2003
).
2.
P.
Roach
,
J. N.
Shirtcliffe
, and
I. M.
Newton
,
Soft Matter
4
,
224
(
2008
).
3.
F.
Xia
and
L.
Jiang
,
Adv. Mater. (Weinheim, Ger.)
20
,
2842
(
2008
).
4.
A.
Carre
,
J. C.
Gastel
, and
M. E. R.
Shanahan
,
Nature (London)
379
,
432
(
1996
).
5.
M. E. R.
Shanahan
and
A.
Carre
,
Langmuir
10
,
1647
(
1994
).
6.
M. E. R.
Shanahan
and
A.
Carre
,
Langmuir
11
,
1396
(
1995
).
7.
C. W.
Extrand
and
Y. J.
Kumagai
,
J. Colloid Interface Sci.
184
,
191
(
1996
).
8.
E.
Saiz
,
A. P.
Tomsia
, and
R. M.
Cannon
,
Acta Mater.
46
,
2349
(
1998
).
9.
G.
Pu
,
J.
Guo
,
G. E.
Larry
, and
S. J.
Severtson
,
Langmuir
23
,
12142
(
2007
).
10.
G.
Pu
and
S. J.
Severtson
,
Langmuir
24
,
4685
(
2008
).
11.
C. W.
Extrand
and
S.
Moon
,
Langmuir
25
,
996
(
2009
).
You do not currently have access to this content.