Post-print UV curing method for improving the mechanical properties of prototypes derived from two-photon lithography.
Opt Express
; 24(24): 27077-27086, 2016 Nov 28.
Article
em En
| MEDLINE
| ID: mdl-27906282
ABSTRACT
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.
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MEDLINE
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En
Ano de publicação:
2016
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Article