Complex droplets on chemically modified silicon nanograss

被引：146

作者：

Jokinen, Ville ^{[2
]}

Sainiemi, Lauri ^{[1
]}

Franssila, Sami ^{[1
]}

机构：

[1] Helsinki Univ Technol, Dept Micro & Nanosci, Helsinki 02015, Finland

[2] Univ Helsinki, Inst Biomed, Prot Chem Unit, FIN-00014 Helsinki, Finland

来源：

ADVANCED MATERIALS | 2008年 / 20卷 / 18期

关键词：

D O I：

10.1002/adma.200800160

中图分类号：

O6 [化学];

学科分类号：

0703 [化学];

摘要：

Dropping in. Chemically modified silicon nanograss combines nanoscale topography with lithographically defined chemical patterns. The material exhibits a high wettability gradient that allows tailoring of complex droplet shapes. The oxidized nanograss is completely wetting, while the polymer-coated nanograss has a contact angle of ca. 170 degrees and is ultrahydrophobic. Novel droplet behavior on these surfaces is studied experimentally.

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收藏

页码：3453 / +

页数：5

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共 20 条

[1]

MANIPULATION OF THE WETTABILITY OF SURFACES ON THE 0.1-MICROMETER TO 1-MICROMETER SCALE THROUGH MICROMACHINING AND MOLECULAR SELF-ASSEMBLY [J].

ABBOTT, NL ;

FOLKERS, JP ;

WHITESIDES, GM .

SCIENCE, 1992, 257 (5075) :1380-1382

[2]

Purity of the sacred lotus, or escape from contamination in biological surfaces [J].

Barthlott, W ;

Neinhuis, C .

PLANTA, 1997, 202 (01) :1-8

[3]

Fabrication of highly antireflective silicon surfaces with superhydrophobicity [J].

Cao, Meiwen ;

Song, Xiaoyan ;

Zhai, Jin ;

Wang, Jinben ;

Wang, Yilin .

JOURNAL OF PHYSICAL CHEMISTRY B, 2006, 110 (26) :13072-13075

[4]

Ultrahydrophobic and ultralyophobic surfaces:: Some comments and examples [J].

Chen, W ;

Fadeev, AY ;

Hsieh, MC ;

Öner, D ;

Youngblood, J ;

McCarthy, TJ .

LANGMUIR, 1999, 15 (10) :3395-3399

[5]

Large slip of aqueous liquid flow over a nanoengineered superhydrophobic surface - art. no. 066001 [J].

Choi, CH ;

Kim, CJ .

PHYSICAL REVIEW LETTERS, 2006, 96 (06)

[6]

Electrowetting droplet microfluidics on a single planar surface [J].

Cooney, Christopher G. ;

Chen, Chao-Yi ;

Emerling, Michael R. ;

Nadim, Ali ;

Sterling, James D. .

MICROFLUIDICS AND NANOFLUIDICS, 2006, 2 (05) :435-446

[7]

Imbibition by polygonal spreading on microdecorated surfaces [J].

Courbin, Laurent ;

Denieul, Etienne ;

Dressaire, Emilie ;

Roper, Marcus ;

Ajdari, Armand ;

Stone, Howard A. .

NATURE MATERIALS, 2007, 6 (09) :661-664

[8]

WETTING - STATICS AND DYNAMICS [J].

DEGENNES, PG .

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

[9]

Wetting of silicon nanograss:: From superhydrophilic to superhydrophobic surfaces [J].

Dorrer, Christian ;

Ruehe, Juergen .

ADVANCED MATERIALS, 2008, 20 (01) :159-+

[10]

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

Gau, H ;

Herminghaus, S ;

Lenz, P ;

Lipowsky, R .

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