How the capillary burst microvalve works

被引：245

作者：

Cho, Hansang

Kim, Ho-Young

Kang, Ji Yoon

Kim, Tae Song ^{[1
]}

机构：

[1] Korea Inst Sci & Technol, Microsyst Res Ctr, Seoul 136791, South Korea

[2] Univ Calif Berkeley, Berkeley Sensor & Actuator Ctr, Dept Bioengn, Berkeley, CA 94720 USA

[3] Seoul Natl Univ, Sch Mech & Aerosp Engn, Seoul 151744, South Korea

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2007年 / 306卷 / 02期

关键词：

capillary burst valve; microfluidics; contact angle; interface; wetting; surface tension;

D O I：

10.1016/j.jcis.2006.10.077

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The capillary burst microvalve offers an attractive means to regulate microliquid flow owing to its simple structure and operation process. However, there existed no rigorous theoretical work to elucidate how the valve works and consequently to predict the valve-bursting condition. Therefore, here we report the theoretical investigation of how the capillary burst valve can stop the advancing liquid meniscus and when it bursts. We confirm our theory with experiments using a centrifugal microfluidic valve system fabricated by soft lithography. (c) 2006 Elsevier Inc. All rights reserved.

引用

页码：379 / 385

页数：7

共 18 条

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