TY - JOUR
T1 - Phase Separation in Wetting Ridges of Sliding Drops on Soft and Swollen Surfaces
AU - Hauer, Lukas
AU - Cai, Zhuoyun
AU - Skabeev, Artem
AU - Vollmer, Doris
AU - Pham, Jonathan T.
N1 - Publisher Copyright:
© 2023 authors. Published by the American Physical Society.
PY - 2023/2/3
Y1 - 2023/2/3
N2 - Drops in contact with swollen, elastomeric substrates can induce a capillary mediated phase separation in wetting ridges. Using confocal microscopy, we visualize phase separation of oligomeric silicone oil from a cross-linked silicone network during steady-state sliding of water drops. We find an inverse relationship between the oil tip height and the drop sliding speed, which is rationalized by competing transport timescales of the oil molecules: separation rate versus drop-advection speed. Separation rates in highly swollen networks are as fast as diffusion in pure melts.
AB - Drops in contact with swollen, elastomeric substrates can induce a capillary mediated phase separation in wetting ridges. Using confocal microscopy, we visualize phase separation of oligomeric silicone oil from a cross-linked silicone network during steady-state sliding of water drops. We find an inverse relationship between the oil tip height and the drop sliding speed, which is rationalized by competing transport timescales of the oil molecules: separation rate versus drop-advection speed. Separation rates in highly swollen networks are as fast as diffusion in pure melts.
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U2 - 10.1103/PhysRevLett.130.058205
DO - 10.1103/PhysRevLett.130.058205
M3 - Article
C2 - 36800444
AN - SCOPUS:85147660377
SN - 0031-9007
VL - 130
JO - Physical Review Letters
JF - Physical Review Letters
IS - 5
M1 - 058205
ER -