Fig. 1From: Tunable Wetting Property in Growth Mode-Controlled WS2 Thin FilmsSchematic diagram of a step-like thickness gradient WO3 film and the sulfurized WS2 films on Al2O3 and SiO2/Si substrates. Water contact angle (CA) images show different CAs on different substrates for 1.4 monolayer of WS2 Back to article page