Hi, I've been working on a problem for some time now and I can't figure out why exactly this happens, and I've been looking for some insight. The phenomenon can be seen in this video. We can see that the oil rearranges itself due to a high-voltage electric field. Thinking about this, my solution was that the oil gets ionised and is then influenced by the el. field to form the seen hexagons. I'm not looking for deriving mathematical proof, I've already set up most of my equations, and due to some thinking I've overthrown my previous explanation. Any ideas?