We developed a flow-induced vibrating cylinder-based energy harvesting system.

The energy harvesting system is beneficial to convert the irregular water flow motion into the oscillating motion of the cylinder. The hybrid mode TENG (contact & separation mode + freestanding sliding mode) could effectively harvest the wated mechanical motion, which can power the wireless ocean monitoring (temperature sensing) system.

We developed an ocean wave energy harvesting system based on the heaving motion.

The relative motion between the CS mode TENG was systematically analyzed by the base excitation theory, and the output performance was optimized by controlling the vibration characteristics. Also, novel concave nanohole patterned tribomaterials were suggested for high performance and durability. Wireless and self-powered ocean monitoring system was demonstrated by using the Aduino sensor module (4 sensors).

We developed a frequency regulating system based on an escapement mechanism to transform irregular motion into regulated motion. 

This approach allows triboelectric nanogenerators (TENGs) to operate with enhanced stability and performance. By integrating frequency up-conversion, the system achieves steady, durable, and power-boosted energy harvesting. It is particularly effective for harvesting energy from natural motions with extremely low frequencies (<0.1 Hz).