An abstract of the research paper states: "A laser-based process is introduced to produce complex three-dimensional (3D) glass components by means of multi-photon induced polymerization reactions. A focused intense laser beam is used to polymerize transparent resins loaded with additives and silica nanoparticles at the wavelength of the laser beam through a nonlinear absorption process. Objects are created directly in the container, overcoming the limitations of a tier-by-tier process. The method can produce silicon dioxide parts through a continuous degreasing and sintering process. Using the overall silica density and a resolution that depends on the size of the laser spot, you can get 3D objects on the centimeter scale." When 3D printing glass using this method, the specific material must remain transparent at specific laser wavelengths during the initial liquid phase and after full polymerization. In addition, it needs to absorb half of the light energy from the wavelength of the laser to initiate the multiphoton polymerization. So the team used a mixture with a photochemical initiator to absorb the light: large quantities of silica nanoparticles and a resin to solve the problem.