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PDMS-based RF Resonant Sensor for Measuring the Concentration of Micro-Plastics
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Researchers designed a low-cost RF resonant sensor using an L-C-L circuit to detect microplastic concentration in water by measuring changes in dielectric constant. The sensor successfully detected microplastics at concentrations as low as 0.1%, offering a simpler and cheaper alternative to conventional particle analysers.
Recently, microplastics have become a big problem, but conventional particle analyzers that can detect microplastics require a lot of time and cost, so in this paper, in order to solve this issue, a low-cost RF sensor was designed to detect microplastics through it. The RF sensor was designed using the L-C-L resonance structure, and the microplastic concentration was detected through the change of the dielectric constant by collecting microplastic in the dielectric space between the capacitors. Through the RF sensor designed in this study, it was confirmed that microplastics as small as 0.1% can be detected, and it was confirmed that a single particle can be distinguished through a readout circuit.
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When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.