Speaking with Mark from rLab at the recent Reading tech group meetup, we were discussing “MEMS” or “Microelectromechanical systems”
These are tiny mechanical systems on chips.
see https://www.ifixit.com/News/iphones-are-allergic-to-helium
These devices are available for us all to play with now! Nanotech is with us. I’m getting old!
see https://en.wikipedia.org/wiki/Microelectromechanical_systems
Tom