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An vibration energy harvester with broadband and frequency-doubling characteristics based on rotary pendulums

Energy HarvestingEngineeringPiezoelectric NanogeneratorsEnergy ConversionMechanical EngineeringMechanical SystemsNonlinear Vibration ControlVibration ControlFrequency-doubling CharacteristicsVibration Energy HarvesterRotary Pendulums