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Identification of Plastic Microspheres In Liquid-Filled Hollow-Core Optical Fibers

2025
Yuxuan Lang, Shangran Xie

Summary

Researchers developed a rapid microplastic identification technique by trapping and propelling plastic microspheres in liquid-filled hollow-core optical fibers, finding that different polymer types exhibit distinct propulsion velocities under optical scattering forces. The approach enables label-free, on-line identification of microplastic types based on their optical properties without requiring chemical staining or spectroscopic analysis.

A rapid microplastics identification technique is proposed based on particle trapping and propulsion in liquid-filled hollow-core optical fibers. Theoretical analysis and measurement results confirm that different types of plastic microspheres exhibit distinct propulsion velocities when driven by optical scattering forces in the hollow core, enabling label-free and on-line identification of microplastic types.

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