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Ultrafast laser welding of ceramics
Welding of ceramics is a key missing component in modern manufacturing. Current methods cannot join ceramics in proximity to temperature-sensitive materials like polymers and electronic components. We introduce an ultrafast pulsed laser welding approach that relies on focusing light on interfaces to...
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Published in: | Science (American Association for the Advancement of Science) 2019-08, Vol.365 (6455), p.803-808 |
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container_title | Science (American Association for the Advancement of Science) |
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creator | Penilla, E H Devia-Cruz, L F Wieg, A T Martinez-Torres, P Cuando-Espitia, N Sellappan, P Kodera, Y Aguilar, G Garay, J E |
description | Welding of ceramics is a key missing component in modern manufacturing. Current methods cannot join ceramics in proximity to temperature-sensitive materials like polymers and electronic components. We introduce an ultrafast pulsed laser welding approach that relies on focusing light on interfaces to ensure an optical interaction volume in ceramics to stimulate nonlinear absorption processes, causing localized melting rather than ablation. The key is the interplay between linear and nonlinear optical properties and laser energy-material coupling. The welded ceramic assemblies hold high vacuum and have shear strengths comparable to metal-to-ceramic diffusion bonds. Laser welding can make ceramics integral components in devices for harsh environments as well as in optoelectronic and/or electronic packages needing visible-radio frequency transparency. |
doi_str_mv | 10.1126/science.aaw6699 |
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Current methods cannot join ceramics in proximity to temperature-sensitive materials like polymers and electronic components. We introduce an ultrafast pulsed laser welding approach that relies on focusing light on interfaces to ensure an optical interaction volume in ceramics to stimulate nonlinear absorption processes, causing localized melting rather than ablation. The key is the interplay between linear and nonlinear optical properties and laser energy-material coupling. The welded ceramic assemblies hold high vacuum and have shear strengths comparable to metal-to-ceramic diffusion bonds. 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subjects | Ablation Automobile industry Bonding strength Ceramic bonding Ceramics Diffusion welding Electronic components Fractures Harsh environments High temperature High vacuum Integrals Interfaces Laser beam welding Lasers Manufacturing Optical properties Optoelectronic devices Polymers Pulsed lasers Steel products Ultrafast lasers Vacuum Welded joints Welding |
title | Ultrafast laser welding of ceramics |
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