Abstract

Controlled liquid flow in a microfluidic channel

Markku Känsäkoski, Vice President, Ginolis Ltd

Microfluidic-based chips offer many advantages over traditional macro sized counterparts: Easy handling (less hands-on-time, and less sample and reagents are required) and rapid test results (shorter analysis times). The shorter analysis time and easy handling of microfluidic chips is attractive for diagnostic applications because it enables rapid bedside and doctor’s office tests, offering the advantage of rapid test result that can be shared with the patient right away. However, diagnostic applications require a strict control of the sample fluid flow within the chip in order to ensure the required accuracy and reproducibility of the analysis/test. Typically operations such as mixing; incubation; separation; and detection are performed within the chip, which demands firm control of the sample fluid flow in terms of timing, volumes and flow rates. In this presentation the proprietary electronic wettability valve for the controlled flow of liquids in a microfluidic channel will be presented with practical examples.