fig8
Figure 8. The piezoelectric PBA sensor characteristics from several joint motions. Voltage outputs of different types of wrist movements: (A) upward and (B) downward bending. Monitoring the bending amplitude of joints with the help of a Band-Aid; (C) elbow; and (D) finger with various bending angles. Inset photos represent the position where the PBA sensor was attached. PBA: PVDF+BTO-NP/AlN.
