Triplet fusion upconversion nanocapsules for volumetric 3D printing

Daniel N. Congreve; Tracy Schloemer; Sam Sanders; Mahesh Gangishetty; Daniel Anderson; Michael Seitz; Arynn Gallegos; Christopher Stokes

doi:10.1117/12.2646246

17 March 2023 Triplet fusion upconversion nanocapsules for volumetric 3D printing

Daniel N. Congreve, Tracy Schloemer, Sam Sanders, Mahesh Gangishetty, Daniel Anderson, Michael Seitz, Arynn Gallegos, Christopher Stokes

Author Affiliations +

Proceedings Volume PC12433, Advanced Fabrication Technologies for Micro/Nano Optics and Photonics XVI; PC1243308 (2023) https://doi.org/10.1117/12.2646246
Event: SPIE OPTO, 2023, San Francisco, California, United States

Abstract

Volumetric 3D printing has tremendous potential due to its ability to print in static resin vats and produce complicated parts without support structures, and two-photon printing has been tremendously successful in this regard. Here, we utilize a molecular form of upconversion, triplet fusion, to achieve the same quadratic light dependence as two photon absorption at much lower powers. We demonstrate the ability to tune the upconversion threshold across two orders of magnitude and encapsulate the molecules at the nanoscale, providing durability upon addition to a resin. These materials allow us to volumetrically print with less than 4 mW of CW laser power. In this talk we will also discuss future directions of this technology.

Conference Presentation

Citation Download Citation

Daniel N. Congreve, Tracy Schloemer, Sam Sanders, Mahesh Gangishetty, Daniel Anderson, Michael Seitz, Arynn Gallegos, and Christopher Stokes "Triplet fusion upconversion nanocapsules for volumetric 3D printing", Proc. SPIE PC12433, Advanced Fabrication Technologies for Micro/Nano Optics and Photonics XVI, PC1243308 (17 March 2023); https://doi.org/10.1117/12.2646246

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