Top up your smartphone with a flick of your fingers

A research team at Michigan State University has developed FENG technology that generates electricity from a pressurized substrate.

The paper-thin device presented by scientists consists of thin layers of silicon, silver, polyamide and polypropylene. The ions contained in them make it possible to produce energy when the nanogenerator layer is compressed under the influence of human movements or mechanical energy. During tests, we were able to power the touch screen, 20 LEDs, and the flexible keyboard, all with a simple touch or press without batteries.

The scientists say the technology they are developing will find applications in electrical devices with touch screens. Used for the production of smartphones, smartwatches and tablets, it will allow the battery to be charged throughout the day without the need to connect to a DC power source. The user, touching the screen, loaded the cell of his device himself.