And boron arsenide
Boron - need mining See Borax mines & found in volcanic spring waters.
Arsenide - arsenic - so toxic! So, a potential environmental problem.
Enviro harpies won’t like that!
Key problem: from article
“.... practical ways of making this material in usable quantities. The current methods of making it produce very nonuniform material ....”
Add in Cubic = a 3D Square, a real Nerd.
Arsenic has been used in semiconductors for a very long time.
This is why the idea of implanting it in people to track them was fake news.
No company would take the risk of law suits.