Low-cost, rapid-prototyping of digital microfluidics devices

被引:98
作者
Abdelgawad, Mohamed [2 ]
Wheeler, Aaron R. [1 ,3 ,4 ]
机构
[1] Univ Toronto, Banting & Best Dept Med Res, Toronto, ON M5G 1L6, Canada
[2] Univ Toronto, Dept Mech & Ind Engn, Toronto, ON M5S 3G8, Canada
[3] Univ Toronto, Dept Chem, Toronto, ON M5S 3H6, Canada
[4] Univ Toronto, Banting & Best Dept Med Res, Toronto, ON M5S 3G9, Canada
基金
加拿大自然科学与工程研究理事会; 加拿大创新基金会;
关键词
digital microfluidics; electrowetting; rapid prototyping; microfabrication; rapid marker masking;
D O I
10.1007/s10404-007-0190-3
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
An innovative and simple microfabrication method for digital microfluidics is presented. In this method, devices are formed from copper substrates or gold compact disks using rapid marker masking to replace photolithography. The new method is capable of forming devices with inter-electrode gaps as small as 50 mu m. Saran (TM) wrap (polyethylene film) and commercial water repellants were used as dielectric and hydrophobic coatings, respectively, to replace commonly used and more expensive materials such as parylene-C and Teflon-AF. Devices formed by the new method enabled single- and two-plate actuation of droplets with volumes of 1-12 mu L. Fabricated devices were successfully tested for droplet manipulation, merging and splitting. We anticipate that this fabrication method will bring digital microfluidics within the reach of any laboratory with minimal facilities.
引用
收藏
页码:349 / 355
页数:7
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