Mechanical exfoliation of two-dimensional materials - ScienceDirect

Fig. 1. (a) Schematic illustration of the mechanical exfoliation process, where a peeling force is applied by the adhesive substrate or tape, and the peeled sheet detaches during the peeling process. (b) The optical image of exfoliated graphene monolayer and multilayers (the number of layers is denoted by the numbers). (c) A 2D sheet peeled off from an adhesive substrate (top and side views). (d) Detailed views of the peeling front and edges, where the width w changes with peeling. The results are obtained from our CGMD simulations. Fig. 2. The 2D peeling stress σ2D predicted from Eq. (14) as a function of (1 – cosα)−1 or w. The results in panel (a) demonstrate significance of the nonlinear term of σ2D at a small peeling angle and a high peeling stress, while data in panel (b) shows that the effect of the edge fracture term on σ2D stress is negligible for large w. Fig. 3. (a) Schematic illustration of a 2D sheet peeled off from a rough substrate. (b) The CGMD simulation results show th

Fig. 1. (a) Schematic illustration of the mechanical exfoliation process, where a peeling force is applied by the adhesive substrate or tape, and the peeled sheet detaches during the peeling process. (b) The optical image of exfoliated graphene monolayer and multilayers (the number of layers is denoted by the numbers). (c) A 2D sheet peeled off from an adhesive substrate (top and side views). (d) Detailed views of the peeling front and edges, where the width w changes with peeling. The results are obtained from our CGMD simulations. Fig. 2. The 2D peeling stress σ2D predicted from Eq. (14) as

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