About this Abstract |
| Meeting |
MS&T25: Materials Science & Technology
|
| Symposium
|
Manufacturing and Processing of Advanced Ceramic Materials
|
| Presentation Title |
Direct-laser-writing of transparent silica and silica-titania glasses |
| Author(s) |
Siddhartha Sarkar, Nicholas Tomlinson, Rajendra K Bordia, Jianhua Tong, Shunyu Liu, Liping Huang, Hai Xiao, Fei Peng |
| On-Site Speaker (Planned) |
Fei Peng |
| Abstract Scope |
This study demonstrates the novel direct-laser-writing (DLW) process for glasses, showing exceptional dimensional control and variability in composition. The achieved pure silica and silica-titania glass structures demonstrated high optical transparency in complex horizontal and vertical structures. This novel additive manufacturing method is a hybrid approach of direct ink writing and laser selective melting. This hybrid approach enables fine spatial resolution, instantaneous consolidation, and high transparency, and there is no need for post-heating treatment to achieve transparency. The laser-processed structures were crack-free and transparent up to a certain weight percentage of TiO2, after which devitrification of the silica network dominated. Remelting the surface with the same scan speed led to pore elimination, while the Marangoni effect led to the characteristic ripple pattern on the surface of the CO2 laser-processed glass. This study paves the way for a novel method to fabricate intricate glass structures in the photonics, packaging, and optics industries. |