Thanks for the answers guys. I’m going to add a few comments, ideas i’ve been having, that sort of thing.
Does anyone know of a material that changes appearance as a current runs through it? I’d love to find a material I could run the current through at different levels and it would react differently, colour changes that sort of thing. It would be perfect if the material didnt return to its original state but maybe took on a slight hue of the reactions over time.
I also thought that there may be an ink that reacts in this way maybe??
I realise that this is a pretty unrealistic request but my thinking is that if anyone knows of a material with any of these properties they could let me know and I could explore it further.
Thanks for the help so far, I hope someone in the community can help me further.