2D boundaries could create electricity

https://phys.org/news/2022-08-2d-boundaries-electricity.html

"less than 10 nanometers thick and forms when tellurium gas introduced while molybdenum metal forms film on silicon dioxide in chemical vapor deposition furnace... islands of semiconducting molybdenum telluride phases in the sea of metallic phases... difference between lattice structures and electrical conductivity creates asymmetry at the phase boundary that is essentially independent of the thickness... simplifies preparation of 2D crystals applications like miniaturized actuators"