Phase-modulated 3D-hierarchical 1T/2H WSe ₂ nanoscrews by a plasma-assisted selenization process as high performance NO gas sensors with a ppb-level detection limit

In this work, we create plasma-engineered-1T/2H 3D-hierarchical WSe ₂ nanoscrews derived from WO x 3D-hierarchical nanoscrews through a low-temperature plasma-assisted selenization process with controlled shapes grown using a glancing angle deposition (GLAD) system.