| Abstract [eng] |
Optical three-dimensional printing (O3DP) is an additive manufacturing technology when a material exposed to light solidifies. Using various light sources – continuous and pulsed – we can achieve different types of light absorption in the material: linear and non-linear absorption. This allows the production of 3D objects with dimensions ranging within 8 orders of magnitude: from hundreds of nanometers to centimeters. Therefore, O3DP has a wide field of applications: from prototyping and small-scale production to the production of micro-optics components, photonics, formation of structures with metamaterial properties, medicine, and tissue engineering. In the dissertation, research was focused on the size of the area of the material exposed to light and manufacturing characteristics. A study of the lateral and longitudinal dimensions of the produced spatial pixels – voxels – was performed depending on the wavelength and pulse duration. The effective degree of absorption was estimated from these data. It was also determined how the polymerization and optical breakdown thresholds change and how this affects the choice of fabrication parameters. Fabrication conditions were investigated in material without photoinitiator using a non-amplified pulse laser system (high repetition rate). A lot of attention has also been paid to the application of plant-derived materials, using linear and nonlinear absorption, and thus demonstrating multiscale O3DP. The results of this thesis showed that to achieve the desired production performance and the size of the manufactured items, it is important not only to modify the properties of the material, but also to be able to widely adjust the parameters of the equipment. |
