| Authors name | Piezoelectric configuration | Advantages/disadvantages |
| Mateu and Moll [34] | Rectangular cantilever and triangular cantilever | Triangular configuration capable of higher strains and higher power generation |
| Roundy [35] | Trapezoidal cantilever | Trapezoidal configuration allows strain to be evenly distributed increasing efficiency |
| Baker [31] | Rectangular and trapezoidal cantilever | Trapezoidal beam produced 30% more energy than rectangular |