2-Photon Polymerization

2-photon polymerization is a high-resolution 3D printing technique, based on multiphoton lithography. It can print sub-micron structures, as well as fairly large volume object while keeping unmatched resolution. As an example, a nozzle designed for 3D hydrodynamic focusing, is shown below. The outer dimensions of the nozzle are 6mm in length and 2.5mm in diameter, while the smaller channel has a diameter of 28 um.