Copper oxidation generally means tarnished surfaces and corroded electronics. But the compound Cu2O, or cuprous oxide, is a promising material for quantum photonics, optoelectronics and renewable energy technologies. Now, a team of researchers has found a way to synthesize high-quality copper oxide microcrystals.
Source:
https://phys.org/news/2020-04-method-high-quality-copper-oxide-crystals.html