Two-photon polymerization using dual lasers could lower cost of complex high-resolution 3D printing

https://phys.org/news/2024-07-dual-laser-approach-high-resolution.html

"combines single-photon absorption from relatively low-cost 532 nm nsvisible-light laser with 2-photon absorption from 800-nm femtosecond UV pulse laser, reducing power requirement as much as 80% for 2D structures, 50% for 3D structures...  found right balance between the printing and inhibition caused by the 2 lasers, to cure photosensitive material... 3D electronics, biomedical micro-robots, tissue engineering 3D structures/ scaffolds"