Journal
OPTICS EXPRESS
Volume 24, Issue 24, Pages 27077-27086Publisher
Optica Publishing Group
DOI: 10.1364/OE.24.027077
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Funding
- US Department of Energy (DOE) by Lawrence Livermore National Laboratory (LLNL) [DE-AC52-07NA27344]
- Laboratory Directed Research and Development (LDRD) programs of Lawrence Livermore National Laboratory (LLNL) [15-ERD-019]
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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. (C) 2016 Optical Society of America
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