Stratasys’ J850 totally has this capability. Full color printing with variable durometer elastomers.

Aviation regulations are written in blood. There’s a reason general aviation is stuck with technology developed in the 50s and 60s: innovating is so expensive from a compliance standpoint and production volume so low that new technologies enter that space at a glacial pace. A new Jet-A burning piston engine is only available in airframes that cost $1M+ and the cost of retrofitting in older airframes is prohibitive. If we weren’t so restrictive on the regulations, capitalism would offer a solution at a vastly reduced price point. So, would you rather have less provably safe aircraft, leaded avgas, or the complete prohibition of aircraft that make up the vast majority of the GA population?

Charity.

I think I should have said “optic” in place of “lens”. The crystal is the portion that is being oscillated to divert the beam. It could be that this is exactly the same principle being used by the referenced experiment but with much higher powered acoustic equipment.

Doesn’t an AOM typically have a lens?

Revit is a pretty commonly used architectural tool now.