Fig. 2: Angle-dependent selective degradation of CVD-grown monolayer MoS2 crystals in PBS solution.
From: Degradation behaviors and mechanisms of MoS2 crystals relevant to bioabsorbable electronics

a OM and AFM images of the MoS2 crystals with different misorientation angles (from 5° to 45°) after the crystals were kept in PBS solution (pH 7.4, 75 °C) for 1 week. b OM images of the MoS2 crystals with different misorientation angles (from 1° to 60°) after the crystals were kept in PBS solution (pH 7.4, 75 °C) for 2–7 weeks. c, d AFM height profiles across the MoS2 GB regions before and after degradation for 1 week. e The width of dissolved MoS2 GB regions determined by both misorientation angles (from 1° to 60°) and degradation time (0–5 weeks)