Projection micro-stereolithography versus master–slave approach to manufacture a micro-optofluidic device for slug flow detection

Abstract In this work, the use of projection micro-stereolithography (P?SL) to 3D print a micro-optofluidic device for slug flow detection is presented. For comparison purposes, poly-dimethylsiloxane (PDMS)–based was also manufactured by novel master–slave printing approach. The has microfluidic T-junction with micro-optical section that consists two optical fiber insertions used detection. design includes micro-channels fiber’s insertion, needed acquire light signal, which give direct information about channel inner exploiting absorption phenomenon. working principle in based on different transmission correlated fluid interfering laser beam micro-channel section. materials manufacturing approaches were fully characterized terms their surface properties via both Atomic Force Microscopy (AFM) and angle contact measure. process within monitored optically signal passage analyzed tracking. A wide experimental campaign done through P?SL technique operative conditions. Thus, optimal one identified Analysis Variance (ANOVA). Then, detailed between detected inside HTL resin PDMS carried out evaluate pros cons using fabrication techniques. analysis run devices revealed can be detection, but future research still obtain allowing outperform device.