Figure 1
From: New First Order Raman-active Modes in Few Layered Transition Metal Dichalcogenides

Optical and atomic force microscope images of exfoliated WSe2 crystals a) Monolayer; b) Bilayer; c)Tetra-layer; d) Penta-layer.
From: New First Order Raman-active Modes in Few Layered Transition Metal Dichalcogenides

Optical and atomic force microscope images of exfoliated WSe2 crystals a) Monolayer; b) Bilayer; c)Tetra-layer; d) Penta-layer.