本研究藉由流道設計進行流體慣性聚焦，對150~600微米大小範圍的聚乙烯球形粒子進行實驗，探討粒子是否可以在具有矩形橫截面的螺旋形通道中有效分離。實驗表明，粒子仍可以成功聚焦在150到600微米尺寸範圍內，其中粒子在流道中的平衡位置主要受其自身的大小有關。另外，本研究結合阻抗量測實驗對流道出口處所收集到的粒子溶液進行分析，發現溶液中粒子的含量越高，電容值的變化越大。通過以上兩個步驟，可以實現分離後立即檢測的綜合實驗，這將減少將來相關分析程序的時間或人工成本。;The separation of microplastics of hundreds of microns in size is usually time-consuming. This study uses the principle of inertial focusing to investigate whether particles can be effectively separated in a spiral channel with a rectangular cross-section. Experiments show that particles can still be successfully focused at higher Reynolds numbers in the size range of 150 to 600 microns. The equilibrium position of the particle in the flow channel is mainly related to its own size. In addition, this study combined the impedance measurement experiment to analyze the capacitance value of the particle solution. It was found that the higher the content of particles in the solution, the greater the decrease in the capacitance value. Through the above two procedures, it is possible to achieve an integrated experiment for immediate detection after separation in the future.
