The process, formally known as “laser-induced backside wet-etching,” uses a laser to blast away at a tank of copper sulfate. When a piece of glass is suspended on the surface of the solution ...

Using a copper sulfate solution, we can etch glass with a pulsed laser like ... explosions of plasma which melt a few microns of glass. The process repeats until you are happy.

Atomic layer etching (ALE) is a highly controlled and selective etching technique that removes material layer by layer at the atomic scale. It is a cyclic process that relies on self-limiting chemical ...