A team of researchers from the University of Utah and Penn State’s Materials Research Institute have recently designed a wearable energy harvesting device, which could generate energy from the swing of an arm while doing activities, such as jogging or walking. This new design is about the size of a wristwatch that produces quite a lot of energy so as to run a personal health monitoring system.
The professors of Materials Science and Engineering and Electrical Engineering from the Penn State, Susan Trolier-McKinstry and Steward S. Flaschen stated that the Wearable Energy Harvesting Device that they have been making use of their optimized materials that run somewhere in between 5 and 50 times that are better than anything else that has been reported.
The energy harvesting devices are quite in high demand so as to power around millions of devices, which will make up the internet of things. Furthermore, by offering the continuous power to a rechargeable battery or supercapacitor, and energy harvesters that can reduce the labor cost of changing out the batteries at times when they fail and further keep dead batteries out of landfills.
Some types of crystals can generate an electric current that was when compressed or can change shape when an electric charge has been applied. The piezoelectric effect is quite used in solar and ultrasound devices, along with energy harvesting.
In this research, the tea, have used a well-known piezoelectric material that is PZT and further coated it on both of the sides of a flexible metal foil for the thickness around four to five time greater than in the previous used devices. The large volume of the active materials equates to the generation of more power.