Human daily life is now almost to the point where we must not leave mobile devices. Imagine if you can charge your cell phone with just one stroke. This is a very pleasant thing. Scientists tell us that this day is not far off. Researchers at Michigan State University in the United States have developed a low-cost, membrane-like nanogenerator that can capture human motion energy. The results were published in the journal Nano Energy.
At present, there are a large number of researches on mechanical energy harvesters, and most of them use piezoelectric and triboelectric effects. The newly developed nanogenerators, also called biocompatible ferroelectric nanogenerators, consist of a combination of silicon wafers and layered, non-contaminating materials. These non-polluting materials include silver, polyimide, and polypropylene ferroelectric electrets. After the specific ions are added, each layer of the nanogenerator contains charged particles, which are as thin as paper and cost is very low.
Studies have shown that this low-cost nanogenerator does not require battery-assisted power generation. When human motion or mechanical energy touches or presses the nanogenerator, it generates power enough to operate an LCD touch screen, or a row of 20 LED lights, or one Flexible keyboard. Nano-generators have different sizes when applied to different devices. For example, a device that supplies power to a touch screen has about a finger thickness, and a device that generates power for an LED light bulb is about the size of a palm. It is worth mentioning that when nano-generators are folded, their performance will exponentially increase.
Due to its characteristics of light weight, flexibility, low cost, and biocompatibility, nano-generators have broad application prospects. Nielsen Sepulveda, chief researcher of the project, believes that this breakthrough means that wearable devices driven by human motion are coming to us. The shoes made from this nano-generator can keep flowing in the process of people's movement. Power the mobile device or wearable device; integrate it into the phone screen and charge the phone by continuously touching the screen. (Reporter He Wei)
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