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Microplastic Sensors Based on Tilted Fiber Bragg Grating and Engineered Peptides

2023 2 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count.
Sibo Wang, Yifan Duan, You Lv, Yonghui Feng, Yunting Du, Qiao Wang, Yang Zhang, Wei Peng

Summary

This paper presents a fiber optic sensor modified with a polystyrene-binding peptide for detecting microplastics in water. Peptide-based biosensors offer a highly selective approach for detecting specific types of microplastics, potentially enabling real-time water quality monitoring.

Polymers
PS

This paper presents a microplastic sensor that utilizes a tilted fiber Bragg grating surface plasmon resonance modified with a polystyrene-binding peptide. The sensor design includes an tilted fiber Bragg grating surrounded by a 50 nm thick gold layer. The PSBP, modified with thiol, self-assembles on the gold surface through a Au-S bond. This peptide biosensor is capable of specifically binding to polystyrene microplastics through hydrophobic. It can effectively detect PS microplastics in water within the concentration range of 1 mg/ml to 1 $\mu$g/ml.

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