A New Energy Harvesting Scheme
A New Device Creates Electricity From Snowfall
Here, we have designed a new device that creates electricity from falling snow. The first of its kind, this device is inexpensive, small, thin and flexible like a sheet of plastic. This device can be used for harvesting energy of the falling snow or even integrated with solar cells to ensure stable power generation around the clock. In addition, this approach enables a compact, stretchable and self-powered snow-related multifunctional weather platform to track snowfall rate, snow depth, wind direction, and speed.
Findings about the device are published in the journal of Nano Energy.
Self-Adaptive Wind Energy Harvester
Bio-inspired technologies have remarkable potential for energy harvesting from clean and sustainable energy sources. Inspired by the hummingbird-wing structure, we propose a shape-adaptive, lightweight triboelectric nanogenerator (TENG) designed to exploit the unique flutter mechanics of the hummingbird for small-scale wind energy harvesting. The flutter is confined between two surfaces for contact electrification upon oscillation. With a six TENG network, the hybrid design attained a 1.5 W m-2 peak electrical output at 7.5 m/s wind speed. We demonstrate the ability of the H-TENG networks to operate Internet of Things (IoT) devices from sustainable and renewable energy sources.
Findings about the device are published in the journal of Nature Scientific Reports
Self-Adjustable Water Wave Energy Harvester
This work presents a fully enclosed duck-shape triboelectric nanogenerator (TENG) for effectively scavenging energy from random and low frequency water waves. The design of the TENG incorporates the freestanding rolling mode and the pitch motion of a duck-shape structure generated by incident waves. In addition, the hybrid system is experimentally tested to enable a commercial wireless temperature sensor node. In summary, the unique duck-shape TENG shows a simple, cost-effective, environmentally friendly, light-weight, and highly stable system.
Findings about the device are published in the journal of Advanced Energy Materials