Figure 5

Numerical modeling of the copper MC-TENG and comparing with the experiments. (a) Numerical setup, mesh and electrical potential contour of the copper capsule in mode 2. Output voltages of the copper MC-TENG in (b) mode 1, (c) mode 2, and (d) mode 3. (e) Comparison of the voltage between the experimental results (\({\mathrm{V}}_{\mathrm{Exp}}\)) and numerical results (\({\mathrm{V}}_{\mathrm{FE}}\)) for the copper MC-TENG (all the capsules are designed with 1 end magnet on each end, and the voltages are obtained in the closed-circuit with the electrical resistance of 10 GΩ).