[Frank Zhao] wanted to try his hand at making a transparent circuit board. His plan was to etch the paths with a laser cutter and fill in the troughs with conductive ink. The grooves are ~0.1mm ...

The four transparent chips are beautiful works ... n-channel and p-channel MOSFETS, diodes, and a ring oscillator circuit. [Jim] has the chips and the datasheets, but doesn’t have the teaching ...