File Name : figure s1.pdf Caption : fig. s1 the photography of the microfluidic chip and the separation system. a photography of the microfluidic chip. b photography of the separation system. File Name : figure s2.pdf Caption : fig. s2 the magnetic field distribution obtained from the 3d simulation model. File Name : figure s3.pdf Caption : fig. s3 flow cytometry test results using size-calibrated fluorescent particles. a test results of 1000 nm particles. b test results of 200 nm particles. File Name : figure s4.pdf Caption : fig. s4 the original detection results of the flow cytometer for particles separation.