I see no reason why they wouldn't. PCB-based transformers exist, and so do ceramic substrate PCBs. If you combine the two, and find a process to weld the ceram

I see no reason why they wouldn't. PCB-based transformers exist, and so do ceramic substrate PCBs. If you combine the two, and find a process to weld the ceramic/glass substrate plates together instead of gluing them together, it could work as a transformer.