Faceted drops on heterogeneous surfaces

被引：54

作者：

Cubaud, T ^{[1
]}

Fermigier, M ^{[1
]}

机构：

[1] Ecole Super Phys & Chim Ind, Phys & Mecan Milieux Heterogenes Lab, CNRS, UMR 7636, F-75231 Paris 05, France

来源：

EUROPHYSICS LETTERS | 2001年 / 55卷 / 02期

关键词：

D O I：

10.1209/epl/i2001-00405-1

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report an experimental study of the shape of large liquid drops spreading on surfaces with patterns of wettability. A heterogeneous surface exhibits multiple energy minima of free energy for the three-phase system. In particular, when the distribution of defects on the substrate is periodic (square or hexagonal), it is possible to initiate a transition between circular and faceted drops. We describe the surface growth of these liquid drops as a geometric avalanche process released by surface tension.

引用

页码：239 / 245

页数：7

共 16 条

[1] AVERAGE SPREADING PARAMETER ON HETEROGENEOUS SURFACES [J].

ANDRIEU, C ;

SYKES, C ;

BROCHARD, F .

LANGMUIR, 1994, 10 (07) :2077-2080

[2] An integrated nanoliter DNA analysis device [J].

Burns, MA ;

Johnson, BN ;

Brahmasandra, SN ;

Handique, K ;

Webster, JR ;

Krishnan, M ;

Sammarco, TS ;

Man, PM ;

Jones, D ;

Heldsinger, D ;

Mastrangelo, CH ;

Burke, DT .

SCIENCE, 1998, 282 (5388) :484-487

[3] WETTING IN NONHOMOGENEOUS SITUATIONS - CAPILLARY RISE EXPERIMENTS [J].

CAZABAT, AM ;

HESLOT, F .

COLLOIDS AND SURFACES, 1990, 51 (51) :309-322

[4] Chemical wetting hysteresis [J].

Chatain, D ;

De Jonghe, V .

JOURNAL OF ADHESION, 1996, 58 (3-4) :163-171

[5] WETTING - STATICS AND DYNAMICS [J].

DEGENNES, PG .

REVIEWS OF MODERN PHYSICS, 1985, 57 (03) :827-863

[6]

DIMEGLIO JM, 1993, CR ACAD SCI II, V316, P1543

[7] CONTACT-ANGLE HYSTERESIS AND INTERACTING SURFACE-DEFECTS [J].

DIMEGLIO, JM .

EUROPHYSICS LETTERS, 1992, 17 (07) :607-612

[8] Liquid morphologies on structured surfaces: From microchannels to microchips [J].

Gau, H ;

Herminghaus, S ;

Lenz, P ;

Lipowsky, R .

SCIENCE, 1999, 283 (5398) :46-49

[9] Fabricating large arrays of microwells with arbitrary dimensions and filling them using discontinuous dewetting [J].

Jackman, RJ ;

Duffy, DC ;

Ostuni, E ;

Willmore, ND ;

Whitesides, GM .

ANALYTICAL CHEMISTRY, 1998, 70 (11) :2280-2287

[10]

JAIN AK, 1989, FUNDAMENTALS DIGITAL, P392

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