Energy harvesting using a dynamic weighing system based on piezoelectric materialsNajoua Fangachi, Ikrame Najihi, Madiha Yessari and Abdelowahed HajjajiEur. Phys. J. Appl. Phys., 97 (2022) 83DOI: https://doi.org/10.1051/epjap/2022220100