Geoff Taylor began piecing together his building blocks at very large scale because he had the equipment required to do this. It was cheaper to build masks and it was easier to perform diagnostics. So in many ways he was building for a future that would provide new process methods to build his devices with a greater level of accuracy at high volume at the wafer level.
When we look at how nanoscale technology is evolving I think we begin to see that solutions to produce Geoff’s devices with greater ease are well within the technologies that exist today. The requirements to etch very accurate and sharp sidewalls. The precise layers required to merge both optical and electrical properties for precise bandgap adjustment with fewer steps. Electrical contacts with very low impedance. The tools and processes to build Geoff’s Lego set in today’s world I believe have been reached.
When we think in terms of everything that Geoff has designed it opens a porthole to the future. A future that was in Geoff’s sights many years ago.
Check out this link. It really tells us we are entering a new world of science and engineering that we have never witnessed before.
https://www.digitaltrends.com/cool-tech/worlds-tiniest-fidget-spinner/