fig14

Figure 14. (A) Structure of the human ear^[146]; (B) Nine different modules of the FPC and an optical image of the PTAS; (C) piezoelectric voltage distribution of the array on the 3D ear, and 3D sound diagrams of the cases in which the sound source was placed above pixel 5 (top) and pixel 8 (bottom). This figure is quoted with permission from Yang et al.^[127]. PTAS: P(VDF-TrFE) acoustic sensor; PVDF-TrFE: poly(vinylidene fluoride-trifluoroethylene).