Figure 3
From: Ultra-flexible Piezoelectric Devices Integrated with Heart to Harvest the Biomechanical Energy

Comparison of output voltage from different locations.
(a) Image of UFEH mounted between left ventricular apex and right ventricle, which belongs to segment 13. (b) Voltage acquired in location in (a). (c) Image of UFEH mounted between the anterior atrioventricular groove and the right ventricular outflow tract. (d) Voltage acquired in location in (c).