Custom 3D printer and resin to achieve 18um width fluid channels

This paper demonstrates 3D printed microfluidic channels ranging from 18um x 20um as well as high aspect ratio channels of a few um x 3mm. They do this by creating a custom DLP-SLA 3D printer, custom low-cost resin, and a channel narrowing technique.

Source: H. Gong, B. Bickham, A. T. Woolley and G. P. Nordin, Lab Chip, 2017, DOI: 10.1039/C7LC00644F