I'm trying to optimize growth rate and quality as functions of plasma power density, deposition gas composition, pressure and substrate temperature. I think there's a lot of process improvement yet to be found.

In the biz environment, you typically get to something that has "good enough" economics, and you start shipping. At that point, you're afraid to touch the deposition equipment for fear of screwing up deliverables. This tends to freeze production economics at far less than what's possible.

I'm poking around to find the next 10x reduction in deposition costs. Everybody should be able to afford diamond doorknobs, don't you think?