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Table 1 The specific parameters used in the model

From: Theoretical System of Contact-Mode Triboelectric Nanogenerators for High Energy Conversion Efficiency

Symbol Value
Surface charge density σ 40 μC/m2
Relative permittivity εr 2.8
Thickness of dielectric layer d 1 × 10−4 m
Effective thickness of dielectric layer d0 = d/εr 3.57 × 10−5 m
Area S 2 × 10−3 m2
Maximum distance xmax 2 × 10−3 m
Mass of the upper layer m 20 g
Total spring coefficient k 8 N/mm
Compressive force F 20 N