![]() One form of 3D printing, multi-photon lithography (MPL), has gained considerable popularity for the ability to arbitrarily structure 3D objects of micro/nano scale size with sub-micrometer resolution 1. The technology of 3D printing has opened the door to a plethora of advances. This method is further scalable, indicating its potential to make fabrications of 3D structures with micro/nanoscale features in a practical time scale a reality. Complex 3D structures with smooth features are fabricated, with millimeter scale printing realized at a rate above 10 −3 mm 3 s −1. A numerical model for computing spatiotemporal focusing and imaging is also presented which is verified by optical imaging and printing results. Through projection of dynamically varying patterns with no pause between patterns, a continuous fabrication process is established. Spatiotemporal focusing confines printing to thin layers, thereby achieving print thicknesses on the micron and sub-micron scale. In this work, high-speed projection multi-photon printing is combined with spatiotemporal focusing for fabrication of 3D structures in a rapid, layer-by-layer, and continuous manner. ![]() ![]() There is demand for scaling up 3D printing throughput, especially for the multi-photon 3D printing process that provides sub-micrometer structuring capabilities required in diverse fields. ![]()
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