Journal
PROCEEDINGS OF THE IEEE
Volume 91, Issue 6, Pages 930-953Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JPROC.2003.813570
Keywords
lab-on-a-chip; microfluidics; microfabrication; micromachining; miniaturized total chemical analysis systems; (pTAS); review
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The use of planar fluidic devices for performing small-volume chemistry was first proposed by analytical chemists, who coined the term miniaturized total chemical analysis systems (muTAS)for this concept. More recently, the muTAS field has begun to encompass other areas of chemistry and biology. To reflect this expanded scope, the broader terms microfluidics and lab-on-a-chip are now often used in addition to muTAS. Most microfluidics researchers rely on micromachining technologies at least to some extent to produce microflow systems based on interconnected micrometer-dimensioned channels. As members of the microelectromechanical systems (MEMS) community know, however one can do more with these techniques. It is possible to impart higher levels of functionality by making features in different materials and at different levels within a microfluidic device. Increasingly, researchers have considered how to integrate electrical or electrochemical function into chips for purposes as diverse as heating, temperature sensing, electrochemical detection, and pumping. MEMS processes applied to new materials have also resulted in new approaches for fabrication of microchannels. This review paper explores these and other developments that have emerged from the increasing interaction between the MEMS and microfluidics worlds.
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