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Design and Testing of 3D-Printed Microfluidic Devices for Microplastic Monitoring
Summary
Researchers designed and tested a stereolithography 3D-printed microfluidic device with impedance spectroscopy electrodes for detecting microplastic particles in drinking water, demonstrating a low-cost fabrication approach for continuous microplastic monitoring systems.
This research presents a stereolithography printed microfluidic device designed to measure microplastic particles in drinking water. The microfluidic configuration consists of a single channel with $2,000 imes 1,000 \upmu \mathrm{m}$ cross section with two copper wires aligned horizontally at the center of the channel. These copper wires serve as electrodes for impedance spectroscopy techniques. The experiment used $15-\upmu \mathrm{m}$ polystyrene beads at concentrations of 2,500 to 130,000 beads/ml, respectively. The result shows that as the concentration of the microplastics increases, the magnitude of the impedance slightly increases.