划屏幕就能给手机充电

    Researchers have revealed a major breakthrough in harvesting energy from human motion. They say it could lead to smartphones powered for a week by the motion of a swipe being harvested.

    Michigan State University’s low-cost device, known as a nanogenerator*, has already been tested. Scientists successfully operated an LCD* touch screen, a bank of 20 LED lights and a flexible keyboard, all with a simple touching or pressing motion and without the aid of a battery. The completed device is as thin as a sheet of paper.

    The process starts with a silicone* wafer, which is then fabricated with several layers, or thin sheets, of environmentally friendly substances* including silver.

    Ions* are added so that each layer in the device contains charged particles. Electrical energy is created when the device is compressed by human motion, or mechanical energy. Researchers are also developing technology that would transmit the power generated from the heel strike to a wireless headset.(SD-Agencies)