Future Smartphones can be charged from the touch screen

In a human arm a huge amount of energy.

She can do a lot of useful and very useful things. Will soon become another opportunity to use energy touch.

U.S. researchers have developed a miniature generator based on friction, which allow you to charge mobile devices, by simply typing or carrying out navigation by moving fingers on the screen of the phone.

Generator created nano technology expert Zhong Lin Wang (Zhong Lin Wang) and his team at Georgia Institute of Technology (Georgia Institute of Technology). It generateselectricity when two specially designed polymer layer in contact or exposed to frictional forces.

Actions such as printing to the screen, which is produced using the new technology, rubbing it or just moving the phone in the pocket of the user can generate the energy that makes the external power supply unnecessary.
The technology is based on the principle of so-called triboelectricity or triboelectrification, which produces a charge similar to the static electricity when two materials are rubbed against each other.

Tengu generator produces energy from the translational motions

Adding microscopic samples of the material, which increases the coefficient of friction, the researchers developed a triboelectric nanogenerator or Tengu, which is capable of producing an output power densities of up to 300 watts per square meter - enough to light 1000 LED generator having a size of a shoe sole with medium size.

Stepping on a small sheet, Tengu can be developed for the 1000 energy LED lamps.

"The amount of charge generated depends on the properties of the surface," says Wang. "Coating the surface of the polymeric film structure of nanomaterials increase the contact area between the sheets of one thousand times and leads to significant increase of productivity."

Interaction between two surfaces produces energy

Tengu technology can be applied to other materials, from paper to metal, plastic and fabric, whistles, mats, backpacks and ocean buoys for the use of electricity generated traffic. And even as an experiment has been built into the sole of the shoes.

Last week, the team presented the project at a meeting of the American Chemical Society in Dallas (American Chemical Society in Dallas) and is currently working on a commercial application for the implementation of the charging technology into mobile devices.

For the production of electricity using Tengu can be used wind energy.

Wang believes that technology can make a significant contribution to world energy production using tiny generators over the next five years, it will help to get and use energy from ocean waves, rain or wind.