I hope this is the right place to ask my question. I am conducting a feasibility study into whether or not it would be possible to tint a single region of a continuous piece of glass. Think of a single square in the centre of a much larger rectangular pane of glass. It is important that whatever process is applied to the glass that it is still a single continuous pane.
I have seen electrochromic glass, but the samples of these frames I've seen always tint the whole pane.
I'm trying to conduct a literature review of potential methods of tinting but this isnt my area and im not sure what to search.
TLDR; Is it feasible to tint a small region of a much larger pane of glass via electrochromic means or otherwise?