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Research Article

Contact Electrification by Quantum-Mechanical Tunneling

Figure 4

Case 2: Time dependence of the electron number in the left material as a function of time for a set of potential values . The upper (lower) plot is with (without) the effect of Coulomb repulsion due to electron transfer and effective charging of the two materials. The distance between the materials is fixed to 10 Å. Other parameters are given in the main text.

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