This isn't a 3d-printing type problem where the problem was basically solved twenty years ago but locked behind patent protection. It's really an incredibly har

This isn't a 3d-printing type problem where the problem was basically solved twenty years ago but locked behind patent protection. It's really an incredibly hard problem. C8 sold a battery-powered miniaturized Raman spectrometer that strapped to your belly about a decade ago. It was a technological tour de force, but it went under. Battery tech is better, but we're just waiting for some particularly clever team to figure out a different optical stack that is small enough to wear comfortably, delivers enough power to be effective, and is robust enough to wear 24 hours a day.