fig9

Figure 9. Digital image of MoS₂, surfactant solutions before and after sonication and the zeta potential distribution of as-prepared MoS₂-CTAB and MoS₂-SDS dispersions (A₁). Tapping-mode AFM images (the height profiles of the sheets along the blue line marked on the images are indicated in white), electron microscope images (inset: selected area diffraction pattern) and TEM and HRTEM images of MoS₂-CTAB (A_2-5)^[55]. AFM images of platelets exfoliated in water with Tween 80 and deposited onto mica substrates: h-BN (B₁); MoS₂ (B₂); WS₂ (B₃). Histogram of thickness distribution of the sample in the corresponding AFM image: h-BN (B₄); MoS₂ (B₅); WS₂ (B₆)^[56].