Abstract
Micropump device is one of the most important devices in the microfluidic system for bio- and nano- analysis systems and medical instruments. In this study, we developed a novel micropump driven by gas-liquid interfaces utilizing a surface tension for next generation of the drug delivery system. And the basic characteristics of this micropump were demonstrated with an experimental approach using the test channel made of a PDMS (Polydimethylsiloxane). This micropump has three pairs of the side channels to generate the interfaces and this micropump is operated with controlled interfaces of liquid and gas at the intersection of the main channel in a micro channel. These controlled interfaces can choke the flow in the main channel and can push out the flow to downstream. As a result, the basic properties of the micropump were investigated and three dimensional shape of the interfaces is significant to estimate the performance of this micropump.
