> “We could use the technology behind rewritable CDs to make new Swiss cheese patterns as they’re needed,”
Could be not much different from compiling and running stuff on an FPGA.
It’s not obvious how you can change the microstructure of a material to something you like in minutes.
How about 3D micro-structures? It’s hard enough to make a one off 3D structure reproducible, never mind a changeable one.
Well, there are 3D printers :)
This is about optical wavelength length scales -> feature sizes << 1500nm for infrared
3D printers’ feature sizes work for giga hertz waves (as a guestimate) assuming:
- The features can be printed - 3D have limitations after all.
- the materials that can be 3D printed are optically suitable.