Figure 11.

(a) Picture and the optical microscopic image of flexible device consisting of single-layer MoS₂ flake; (b) schematic illustration of the operating mechanism of single-layer MoS₂ piezoelectric device under strain (reprinted with permission for Figure 11a,b from Ref. [137] Copyright 2014 Springer Nature); (c) image of conformal tactile sensor based on MoS₂ floating on the surface of water; (d) the output resistance change versus compressive strain; (e) fractional change in resistance of the tactile sensor as function of the applied tensile and compressive strain; (f) monitoring of pressure distribution (reprinted with permission for Figure 11c–f from Ref. [18] Copyright 2016 John Wiley and Sons).