Casali Center for Applied Chemistry, Institute of Chemistry, The Center for Nanoscience and Nanotechnology , The Hebrew University of Jerusalem , Jerusalem 9190401 , Israel.
ACS Appl Mater Interfaces. 2018 Jun 6;10(22):18879-18885. doi: 10.1021/acsami.8b03766. Epub 2018 May 21.
A sol, aqueous solution-based ink is presented for fabrication of 3D transparent silica glass objects with complex geometries, by a simple 3D printing process conducted at room temperature. The ink combines a hybrid ceramic precursor that can undergo both the photopolymerization reaction and a sol-gel process, both in the solution form, without any particles. The printing is conducted by localized photopolymerization with the use of a low-cost 3D printer. Following printing, upon aging and densifying, the resulting objects convert from a gel to a xerogel and then to a fused silica. The printed objects, which are composed of fused silica, are transparent and have tunable density and refractive indices.
本研究提出了一种基于溶胶的水溶性墨水，可通过在室温下进行的简单 3D 打印工艺，制造具有复杂几何形状的 3D 透明二氧化硅玻璃制品。该墨水结合了一种混合陶瓷前体，它可以在溶液形式下同时进行光聚合反应和溶胶-凝胶过程，而无需任何颗粒。通过使用低成本的 3D 打印机进行局部光聚合来进行打印。打印后，经过老化和致密化，所得制品从凝胶转变为气凝胶，然后转变为熔融二氧化硅。由熔融二氧化硅组成的打印制品是透明的，并且具有可调的密度和折射率。
