Thermocapillary actuation of droplets on chemically patterned surfaces by programmable microheater arrays

被引：192

作者：

Darhuber, AA ^{[1
]}

Valentino, JP

Troian, SM

Wagner, S

机构：

[1] Sch Engn & Appl Sci, Microfluid Res & Engn Lab, Princeton, NJ 08540 USA

[2] Princeton Univ, Dept Elect Engn, Princeton, NJ 08540 USA

来源：

JOURNAL OF MICROELECTROMECHANICAL SYSTEMS | 2003年 / 12卷 / 06期

基金：

美国国家航空航天局; 美国国家科学基金会;

关键词：

chemical surface patterning; free surface flows; microfluidics; thermocapillary actuation;

D O I：

10.1109/JMEMS.2003.820267

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

d We have designed a microfluidic device for the actuation of liquid droplets or continuous streams on a solid surface by means of integrated microheater arrays. The microheaters provide control of the surface temperature distribution with high spatial resolution. These temperature gradients locally alter the surface tension along droplets and thin films thus propelling the liquid toward the colder regions. In combination with liquophilic and liquophobic chemical surface patterning, this device can be used as a logistic platform for the parallel and automated routing, mixing and reacting of a multitude of liquid samples, including alkanes, poly(ethylene glycol) and water.

引用

页码：873 / 879

页数：7

共 26 条

[11] Theoretical and experimental study of MHD (magnetohydrodynamic) micropump [J].

Jang, JS ;

Lee, SS .

SENSORS AND ACTUATORS A-PHYSICAL, 2000, 80 (01) :84-89

[12]

Jasper J.J., 1972, J PHYS CHEM REF DATA, V1, P841, DOI [DOI 10.1063/1.3253106, 10.1063/1.3253106]

[13] Dielectrophoretic liquid actuation and nanodroplet formation [J].

Jones, TB ;

Gunji, M ;

Washizu, M ;

Feldman, MJ .

JOURNAL OF APPLIED PHYSICS, 2001, 89 (02) :1441-1448

[14] Patterning liquid flow on the microscopic scale [J].

Kataoka, DE ;

Troian, SM .

NATURE, 1999, 402 (6763) :794-797

[15] Surface-tension-driven microactuation based on continuous electrowetting [J].

Lee, J ;

Kim, CJ .

JOURNAL OF MICROELECTROMECHANICAL SYSTEMS, 2000, 9 (02) :171-180

[16]

Levich V. G., 1962, Physiochemical Hydrodynamics

[17]

Lide D.R., 2007, CRC Handbook of Chemistry and Physics, V88th

[18] DYNAMICS OF THIN LIQUID FILMS IN PRESENCE OF SURFACE-TENSION GRADIENTS [J].

LUDVIKSS.V ;

LIGHTFOO.EN .

AICHE JOURNAL, 1971, 17 (05) :1166-&

[19] Electrowetting-based actuation of liquid droplets for microfluidic applications [J].

Pollack, MG ;

Fair, RB ;

Shenderov, AD .

APPLIED PHYSICS LETTERS, 2000, 77 (11) :1725-1726

[20] MICROFABRICATED CHEMICAL MEASUREMENT SYSTEMS [J].

RAMSEY, JM ;

JACOBSON, SC ;

KNAPP, MR .

NATURE MEDICINE, 1995, 1 (10) :1093-1096

← 1 2 3 →