| dc.description.abstract | There are many phenomena in nature that we cannot observed directly, such as the microscopic dynamics change within the rock pores when increase the water flooding rate. Applied Micro models make a lot of fluid phenomena to be observed directly. Traditional micro-models made of glass, and the channels manufactured by etching way. The models were limited by the lack of design flexibility. Other kinds of micro models such as Polydimethylsiloxane (PDMS) microfluidic models were not suitable for observation because of its easily infiltration and deformation.
In this study, we use the microfluidic chip technology which has been widely used in biomedical field to manufacture the micro model. First, we made the master mold by lithography on smooth silicon substrate, and then made micro model by hot embossing and thermal bonding method. Cyclic olefin copolymer (COC) was the substrate for the model because of excellent chemical and mechanical properties. The model connected steel needles and observation equipment to experiment with controlled flow.
Micro model in this experiment were designing flexibility, precision scales, low cost, low complexity, very suitable for laboratory using. More applications direction due to the substrate modified or coated, showing great potential for future development. | en_US |