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Microplastics detection with microfluidics integrated with a microwave sensor

Measurement Sensors 2024 1 citation ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 35 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.

André Barrancos, André Barrancos, André Barrancos, André Barrancos, Victor Macedo, Pedro M. Ramos, Victor Macedo, Victor Macedo, Victor Macedo, Pedro M. Ramos, Luís S. Rosado Pedro M. Ramos, Pedro M. Ramos, Luís S. Rosado Luís S. Rosado

Summary

Researchers developed a microwave sensor integrated with a microfluidic channel for real-time microplastics detection in water, using finite-element simulations to optimize sensitivity and validating performance experimentally. The system achieved a sensitivity of 0.1 dB and detected microplastics as small as 600 micrometers through measurement of reflected signal variations.

This paper reports the development of a microwave sensor integrated with a microfluidic channel allowing for real-time microplastics detection in water. The developed system measures the variations of the reflected signal when microplastics are present in water. Initially, finite-element simulations were performed to optimize the sensor's sensitivity when microplastics are present. In the end, the microwave sensor was tested, and the sensor showed a sensitivity of 0.1 dB in the microplastics' presence with a minimum size of 600 μm.

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