Researchers at EPFL in Switzerland have developed 3D printed microstructures with a 1.0 micron lateral and 21.5-micron axial printing resolution by detailing their approach towards existing laser-based microfabrication techniques which uses two-photon photopolymerization. The research team is now working toward clinical use for their technique while developing biocompatible photopolymers and a compact delivery system.

Source: https://www.osa.org/en-us/about_osa/newsroom/news_releases/2018/ultra-thin_optical_fibers_offer_new_way_to_3d_prin/