Ultrasensitive ammonia (NH3) gas sensor: DFT Simulation-Directed Selection of High-Performance Metal-Doped Molybdenum Tri-oxide (α-MoO3) Nanoribbons for NH3 Detection. - Dongwook Kwak; Henry Sokol; Bryan P. Moser; Heejeong Ryu; Kristie J. Koski; Radenka Maric; Liang Zhang; Yu Lei (IEEE SENSORS, 2019)