For photos, I have been using Immich, and have been very impressed. It has pretty much all the features I want (automatic backup, chronological timeline, mobile/web app, face tagging, semantic search, albums, sharing, etc). It’s a server you self-host though, so setting it up might be a pain if you’ve never done something like that before.
Good question. This new material is technically a ceramic, not a metal, so I’d be inclined to say no. But we’d need more information on its electrical properties to say for sure.