In-out cylindrical triboelectric nanogenerators based energy harvester

Ahmed Zaky, Akram Ahmed, Passant Ibrahim, Basant Mahmoud, Hassan Mostafa

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Scopus citations


The arising need for self-powered devices have driven the research towards new energy harvesting techniques, especially the mechanical energy. Triboelectric nanogenerators (TENGs) are considered a very promising technique for harvesting mechanical energy. However, most of the studies in the literature have been focusing on rectangular TENGs with with a scarce research in cylindrical configurations. In this paper, a novel In-Out cylindrical TENG mode is proposed to serve as a potential candidate for different applications. A FEM model is constructed using COMSOL-Multiphysics to characterize the device intrinsic properties such as open circuit voltage Voc(x) and short circuit charges Qsc(x). Furthermore, an analytical model is developed to obtain a closed form (V-Q-x) relation with its accuracy validated against the FEM model. The results show an excellent agreement with an average error of 5.2% due to FEM limitations, which was a motivation for establishing a Verilog-A model as a circuit element to describe the mode's behavior under different loading conditions and explore its ability to be integrated into different applications.
Original languageEnglish (US)
Title of host publication2018 IEEE 61st International Midwest Symposium on Circuits and Systems (MWSCAS)
Number of pages4
ISBN (Print)9781538673928
StatePublished - Jan 22 2019
Externally publishedYes


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