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• W4379016552 endingPage "117798" @default.
• W4379016552 startingPage "117798" @default.
• W4379016552 abstract "The efficiency of the energy harvesters can be improved by increasing the harvester bandwidth. Toward this, we presented a Two-Degree of Freedom (2-DOF) Vibro-impact Triboelectric Energy Harvester by combining multi-modality and piecewise linearity of two close resonant frequencies. The harvester structure consists of a primary cantilever beam attached to a secondary cantilever beam through a tip mass. The secondary beam is attached in the opposite direction to the primary beam. The secondary beam’s bottom surface acts as a triboelectric generator’s upper electrode. A lower electrode with bonded Polydimethylsiloxane (PDMS) insulator is attached at some gap separation distance underneath the upper electrode to create an impact structure. When the system vibrates, an impact between the triboelectric layers generates an alternating electrical signal. A 2-DOF system with lumped parameter theoretical model was developed to extract the governing equations. In addition, the experimental results were extracted to validate the theoretical model. Afterward, parametric analysis based on the variation of gaps, resistance, and surface charge density was theoretically investigated. Finally, the proposed harvester demonstrated an increase in the maximum output voltage by more than 300%, and a 250% increase in the bandwidth, by changing the excitation level from 0.1 g to 0.7 g. The result of this study can pave the way for an efficient energy harvester that can scavenge ambient vibrations over a wide range of excitation frequencies." @default.
• W4379016552 created "2023-06-02" @default.
• W4379016552 creator A5013439932 @default.
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• W4379016552 date "2023-10-01" @default.
• W4379016552 modified "2023-09-26" @default.
• W4379016552 title "A Two-Degree-of-Freedom Vibro-impact Triboelectric Energy Harvester for larger bandwidth" @default.
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• W4379016552 doi "https://doi.org/10.1016/j.jsv.2023.117798" @default.
• W4379016552 hasPublicationYear "2023" @default.
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