複合式塑膠微粒子感測器開發

This proposal aims to develop a small microplastics sensor that can be used todetermine the specific plastic particle type and its concentration by measuring theelectrical and optical properties of the particles. In general, current methods fordetecting small plastic particles require expensive and sophisticated analyticalequipment, such as Raman spectroscopy, and are not well suited for immediatetesting in the field environment. The sensing architecture developed by thisproposal integrates two detection methods into a small structure. When theparticles to be tested stay in the sensing area, the infrared beam of a specificfrequency band is scattered and absorbed, resulting in a change in light intensity.These particles will also cause a change in the capacitance value of the sensingelectrodes. In addition, the project is expected to design suitable light detectingand capacitive sensing circuits to achieve a sensing system that can monitorsmall plastic particles in situ and over a long period of time.