“…The piezoelectric technology offers wide perspectives as an alternative energy source for a various range of low power applications, from industrial use to smart cities and biomedical applications [ [1] , [2] , [3] , [4] , [5] , [6] , [7] ]. However, the technology has not yet reached maturity, and most researchers are seeking methods to optimize the electric response by any possible means [ [8] , [9] , [10] , [11] , [12] , [13] , [14] , [15] , [16] , [17] , [18] , [19] , [20] , [21] , [22] , [23] , [24] , [25] ].…”