From scrap materials purchased at a nearby hardware store, a team of University of Alabama scientists collected Simple and cheap power generator. We speak of the so-called triboelectric generator when energy is obtained from movement or friction. Typically, such generators were made from special materials, but the experimenters surprised by the use of the most common components.
The design proposed by scientists involves double-sided tape bought at a store and a plastic film sandwiched between thin sheets of aluminum, also available on the market. When connecting and separating the layers, discharges of static electricity occur between them, which are stronger the stronger the pressure on the layers.
The created version of the generator with two electrodes showed a power density of 169.6 W / m2. This value is 47% higher than previous constructions based on special materials. The scientists used the electricity thus generated to light up an array of more than 400 LEDs simply by squeezing and releasing the layers. Kneeling scientists assembled a generator whose capabilities and performance reached more complex and expensive versions.
Such generators are used to power wearable electronics – they work well by friction in clothing components; Based on triboelectric generators, it is possible to create floors in rooms to power lighting. Hearing aids can be powered by membrane vibrations, as can many other scenarios for using generators based on this principle. And it’s just great that the manufacture of such generators does not require expensive and rare materials.