New 3D printing capabilities based on an ultrasensitive nonlinear photosensitive resin – New-3Dprint
The project will study new 3D printing capabilities resulting from the development of a new resin with an efficiency of polymerization that increases nonlinearly with CW light irradiance.
It will be a stereolithographic 3D printing technique, but different from UV photopolymerization, that uses thin successive layers of resins to obtain the 3D resolution. The nonlinear photopolymerization process leads to an intrinsic 3D spatial resolution, i.e. a polymerization confined at the laser focal point in the resin volume. Currently, it is the only manufacturing process that can fabricate parts with complex 3D shapes and sub-micron resolution. However, manufacturing times are intrinsically long (mm3 in several hours) due to the sub-micron size of the laser spot.
The project propose to accelerate the manufacturing speed with a massively parallelized process that is the only mean to overcome the contradiction between resolution and speed. It targets the simultaneous polymerization of millions of voxels in the resin volume. First, it will study the polymerization induced by the generation of ultrathin (1-5 microns) laser images in the resin volume by real and holographic image projections. Then, it will investigate the “one step” fabrication of objects by the projection of their 3D hologram image.Finally, the project aims to develop prototypes of new projection 3D printers with high resolution (0.5-10 um), and high speed to fabricate millimetre size micro-structured parts needed for the miniaturisation of mechanical, optical, fluidics, and medical systems, and advanced diffractive optical micro/nano-surfaces for applications in security hologram, biometric, aeronautic, defence and automobile industries.
Monsieur Patrice Baldeck (Laboratoire de Chimie UMR ENS-UCBL-CNRS 5182)
The author of this summary is the project coordinator, who is responsible for the content of this summary. The ANR declines any responsibility as for its contents.
IMT Atlantique Ecole Nationale Supérieure Mines-Telecom Atlantique Bretagne Pays de la Loire
UMR 5182 Laboratoire de Chimie UMR ENS-UCBL-CNRS 5182
Help of the ANR 441,996 euros
Beginning and duration of the scientific project: - 48 Months