Optimization of Motor-Based Rotational Triboelectric Nanogenerators (RoTENGs) for Neural Stimulation

This paper demonstrates optimization and demonstration of rotational TENGs (RoTENGs) for neural stimulation. The proposed RoTENGs generate electrical stimulation pulses by motor rotation. Two prototypes are investigated for this study. The generated pulse parameters can be modulated by changing the speed of the motor. The current and charge values of the pulses are also investigated for neurostimulation. Furthermore, neural stimulation of a sciatic nerve in rats using the proposed RoTENGs is demonstrated with monitoring muscle movement and with recording neural signals. The result indicates that this RoTENG could be used for neuromodulation applications such as neuroprosthetics and rehabilitation near future.