Thermal post-curing as an efficient strategy to eliminate process parameter sensitivity in the mechanical properties of two-photon polymerized materials
Thermal post-curing as an efficient strategy to eliminate process parameter sensitivity in the mechanical properties of two-photon polymerized materials
复制标题
DOI：
10.1364/oe.395986
复制
发表时间：
2020-07-06
期刊：
影响因子：
3.8
通讯作者：
Valdevit, Lorenzo
中科院分区：
文献类型：
--
作者：
Bauer, Jens;Izard, Anna Guell;Valdevit, Lorenzo
双光子聚合直接激光写入（TPP-DLW）是以纳米级分辨率增材制造复杂部件的最通用技术之一。然而，由多个工艺参数的选择组合产生的广泛的机械性能对其广泛使用造成了障碍。在这里，我们介绍了一种热后固化路线，作为一种有效而简单的方法，将丙烯酸酯基TPP-DLW衍生部件的机械性能提高20-250%，并在很大程度上消除了工艺参数，材料性能和部件功能的特征耦合。我们确定的基本机制的性能增强作为一个自启动的热固化反应，这有力地促进了高性能的再现性，这是必不可少的任何应用程序的TPP-DLW。(C)根据OSA开放获取出版协议的条款，2020年美国光学学会
Two-photon polymerization direct laser writing (TPP-DLW) is one of the most versatile technologies to additively manufacture complex parts with nanoscale resolution. However, the wide range of mechanical properties that results from the chosen combination of multiple process parameters imposes an obstacle to its widespread use. Here we introduce a thermal post-curing route as an effective and simple method to increase the mechanical properties of acrylate-based TPP-DLW-derived parts by 20-250% and to largely eliminate the characteristic coupling of processing parameters, material properties and part functionality. We identify the underlying mechanism of the property enhancement as a self-initiated thermal curing reaction, which robustly facilitates the high property reproducibility that is essential for any application of TPP-DLW. (C) 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement