Toward Continuous Nano-Plastic Monitoring in Water by High Frequency Impedance Measurement With Nano-Electrode Arrays

被引：4

作者：

Goldoni, Daniele ^{[1
]}

Rovati, Luigi ^{[1
]}

Selmi, Luca ^{[1
]}

机构：

[1] Univ Modena & Reggio Emilia, Dept Engn Enzo Ferrari, I-41125 Modena, Italy

来源：

IEEE SENSORS JOURNAL | 2023年 / 23卷 / 17期

关键词：

CMOS nanoelectrode arrays; environmental sensor; high-frequency impedance measurements; label-free pollutant detection; microplastic; nanoplastic; single particle detection; sub-micrometer particle sizing; water monitoring; MICROPLASTICS; MICROPARTICLES; SPECTROSCOPY; SENSORS; SYSTEM;

D O I：

10.1109/JSEN.2023.3296158

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We explore the potentiality of high frequency impedance measurements with CMOS nano-electrode (NE) arrays for nano-plastic pollutant particles monitoring in water. This technology offers benefits as nano-scale resolution, high parallelization, scalability, label-free single particle detection, and automatic measurements without operator intervention. Simple models are proposed for size and concentration estimation. The former integrates measurements of adjacent electrodes and shows uncertainty comparable to the nominal one with mean prediction error lower than 45% down to 50 nm radius. The latter accounts for noise in the definition of the sensing volume. We report a worst case concentration error lower than a factor 1.7 under stationary and continuous flow, which demonstrates the potential of this technology for automated measurements.

引用

页码：20180 / 20188

页数：9