[19a-F306-1~12] 12.7 Biomedical Engineering and Biochips

△ [19a-F306-8] Curved Surface Shaping Process for Improving Reliability of Microfluidic Devices

〇Shunya Okamoto¹, Yoshiaki Ukita¹ (1.Univ. of Yamanashi)

Keywords:curved surface, microfluidic devices, polydimethylpolysiloxane

In order to connect multiple components having different scale of dimension, it is sometimes required to drastically change diameters of the microchannels. Typical two-dimensional design of the microchannel cannot adopt the scale of the components therefore sometimes step-shaped structure is employed and fabricated on the basis of multi-step photo-lithography process. However, in such cases, gas bubble is easily trapped during the priming of the microchannels, result in fatal troubles in the operation of the system. In this study, we investigated a reflow process for fabrication of mold master for patterning of curved surface structure into PDMS microchips.