Mechanically Tunable Slippery Behavior on Soft Poly(dimethylsiloxane)-Based Anisotropic Wrinkles Infused with Lubricating Fluid

被引：36

作者：

Roy, Pritam Kumar ^{[1
]}

Pant, Reeta ^{[1
]}

Nagarajan, Arun Kumar ^{[2
]}

Khare, Krishnacharya ^{[1
]}

机构：

[1] Indian Inst Technol, Dept Phys, Kanpur 208016, Uttar Pradesh, India

[2] Hindustan Unilever Res Ctr, Bangalore 560066, Karnataka, India

来源：

LANGMUIR | 2016年 / 32卷 / 23期

关键词：

THIN-FILMS; SURFACE; COATINGS; INSTABILITY; GENERATION; PATTERNS; SILICON; SKIN; ICE;

D O I：

10.1021/acs.langmuir.6b00865

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We demonstrate a novel technique to fabricate mechanically tunable slippery surfaces using one-dimensional (anisotropic) elastic wrinkles. Such wrinkles show tunable topography (amplitude) on the application of mechanical strain. Following Nepenthes pitcher plants, lubricating fluid infused solid surfaces show excellent slippery behavior for test liquid drops. Therefore, combining the above two, that is, infusing suitable lubricating fluid on elastic wrinkles, would enable us to fabricate mechanically tunable slippery surfaces. Completely stretched (flat) wrinkles have uniform coating of lubricating fluid, whereas completely relaxed (full amplitude) wrinkles have most of the lubricating oil in the wrinkle grooves. Therefore, water drops on completely stretched surface show excellent slippery behavior, whereas on completely relaxed surface they show reduced slippery behavior. Therefore, continuous variation of wrinkle stretching provides reversibly tunable slippery behavior on such a system. Because the wrinkles are one-dimensional, they show anisotropic tunability of slippery behavior depending upon whether test liquid drops slip parallel or perpendicular to the wrinkles.

引用

页码：5738 / 5743

页数：6

共 50 条

[1] Surface wrinkling in liquid crystal elastomers [J].

Agrawal, Aditya ;

Luchette, Paul ;

Palffy-Muhoray, Peter ;

Biswal, Sibani Lisa ;

Chapman, Walter G. ;

Verduzco, Rafael .

SOFT MATTER, 2012, 8 (27) :7138-7142

[2] Enhanced Condensation on Lubricant-Impregnated Nanotextured Surfaces [J].

Anand, Sushant ;

Paxson, Adam T. ;

Dhiman, Rajeev ;

Smith, J. David ;

Varanasi, Kripa K. .

ACS NANO, 2012, 6 (11) :10122-10129

[3] A smooth future? [J].

Bocquet, Lyderic ;

Lauga, Eric .

NATURE MATERIALS, 2011, 10 (05) :334-337

[4] Spontaneous formation of ordered structures in thin films of metals supported on an elastomeric polymer [J].

Bowden, N ;

Brittain, S ;

Evans, AG ;

Hutchinson, JW ;

Whitesides, GM .

NATURE, 1998, 393 (6681) :146-149

[5] The controlled formation of ordered, sinusoidal structures by plasma oxidation of an elastomeric polymer [J].

Bowden, N ;

Huck, WTS ;

Paul, KE ;

Whitesides, GM .

APPLIED PHYSICS LETTERS, 1999, 75 (17) :2557-2559

[6]

Brinkmann M, 2007, MEMS REF SHELF, P157, DOI 10.1007/978-0-387-68424-6_4

[7] Geometry and physics of wrinkling [J].

Cerda, E ;

Mahadevan, L .

PHYSICAL REVIEW LETTERS, 2003, 90 (07) :4

[8] Fabricating microlens arrays by surface wrinkling [J].

Chan, Edwin P. ;

Crosby, Alfred J. .

ADVANCED MATERIALS, 2006, 18 (24) :3238-+

[9] Spontaneous formation of stable aligned wrinkling patterns [J].

Chan, EP ;

Crosby, AJ .

SOFT MATTER, 2006, 2 (04) :324-328

[10] Strain responsive concave and convex microlens arrays [J].

Chandra, Dinesh ;

Yang, Shu ;

Lin, Pei-Chun .

APPLIED PHYSICS LETTERS, 2007, 91 (25)

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