One step fabrication of a microfluidic device with an integrated membrane by multimaterial 3D printing

Multimaterial 3D printing was used to create a microfluidic device with an integrated porous membrane for soil analysis in a single fabrication step in less than 30 min. A dual-head fused deposition moulding (FDM) 3D printer was used to seamlessly print porous and non-porous materials, enabling for the printing of a device with integrated membrane. A 3D printed microfluidic device with 400 μm porous composite membrane was used for direct quantification of nitrate in soil slurry.