Oakdale James S, Ye Jianchao, Smith William L, Biener Juergen
Opt Express. 2016 Nov 28;24(24):27077-27086. doi: 10.1364/OE.24.027077.
Two photon polymerization (TPP) is a precise, reliable, and increasingly popular technique for rapid prototyping of micro-scale parts with sub-micron resolution. The materials of choice underlying this process are predominately acrylic resins cross-linked via free-radical polymerization. Due to the nature of the printing process, the derived parts are only partially cured and the corresponding mechanical properties, i.e. modulus and ultimate strength, are lower than if the material were cross-linked to the maximum extent. Herein, post-print curing via UV-driven radical generation, is demonstrated to increase the overall degree of cross-linking of low density, TPP-derived structures.
双光子聚合（TPP）是一种精确、可靠且日益流行的技术，用于以亚微米分辨率快速制造微尺度零件的原型。该工艺所选用的材料主要是通过自由基聚合交联的丙烯酸树脂。由于打印过程的性质，所得零件仅部分固化，相应的机械性能，即模量和极限强度，低于材料最大程度交联时的性能。在此，通过紫外线驱动产生自由基进行打印后固化，被证明可提高低密度TPP衍生结构的整体交联度。
