In this exciting episode, we're joined by Dr. Congreve, who introduces us to a game-changing technology in the field of three-dimensional (3D) printing. Stereolithography, one of the most successful techniques in 3D printing, has its limitations due to the linear absorption of light. This factor restricts both the choice of resin and the range of shapes that can be produced.

In order to overcome this challenge, Dr. Congreve's team has utilized triplet fusion upconversion, a technique that enables volumetric printing with less than 4 milliwatt continuous-wave excitation. This strategy offers a leap beyond the traditional interfacial paradigm of 3D printing and allows for the creation of more complex structures without the restrictions associated with high laser power.

Dr. Congreve further discusses the introduction of an excitonic strategy to systematically control the upconversion threshold, supporting monovoxel or parallelized printing schemes. This enables 3D printing at power densities significantly lower than those required for two-photon-based 3D printing.

Join us as we delve into this groundbreaking technology and its potential impact on the future of 3D printing.

Keywords: Dr. Congreve, 3D Printing, Stereolithography, Triplet Fusion Upconversion, Volumetric Printing, Excitonic Strategy, Monovoxel, Parallelized Printing Schemes.

https://doi.org/10.1038/s41586-022-04485-8 Triplet fusion upconversion nanocapsules for volumetric 3D printing