Researchers from the Chinese Academy of Sciences have developed a new type of wearable motor generator that can harvest energy from the wind when people are walking. The research team said that its low cost and high efficiency are enough to power small sensors and LEDs. Although it works with wind, it is not exactly a turbine. Instead, this type of generator collects energy through a mechanism similar to the generation of static electricity. In this case, the active ingredient is two plastic strips in the tube. When air flows through the tube, the strips will fan and beat together, capturing and storing energy. The team said that this nano generator can work at a mild wind speed of 3.6 mph (5.8 km/h), and tests have shown that it can work by attaching to the arm when a person is walking. In other words, it works best at wind speeds of 8.9 to 17.9 mph (14.3 to 28.8 km/h), so maybe it is more suitable for use on bicycles. The team stated that the wind energy conversion efficiency of the device is 3.23%. This is higher than other devices that collect energy from the wind, but it is far from the more specialized wind energy collectors. For example, although it cannot be compared with apples, the efficiency of an ordinary old wind turbine is about 50%. Therefore, the new nano generator will be more suitable for small equipment. The optimized version can output a voltage of 175 V, a current of 43 μA and a power of 2.5 mW, which is enough to power a small temperature sensor or 100 LED arrays. This new design could one day provide information for new wearable nanogenerators and power small electronic devices. Other concepts include fabrics that can collect energy from friction, other fabrics that can simultaneously use sunlight and movement, and metal sheets that can collect energy from curved fingers. Ultimately, the team plans to try to expand the scale of the technology to generate more electricity, possibly even the scale of the grid-although there is still a lot of work to be done before this stage. "I hope to expand the scale of the device to 1,000 watts, so it is competitive with traditional wind turbines," said Yang Ya, senior author of the study. "We can put these devices in places that traditional wind turbines can't reach. We can put them on mountains or on top of buildings to achieve sustainable energy." The research was published in the journal Cell Reports Physical Science. The team demonstrated the device in the video below. Adhesive Activated Polyester Yarn Aa Yarn For Dipping Fabric,Polyester Yarn For Coveyor Belt,Polyester Yarn For Rubber Hoses,Polyester Yarn For Dipping Fabric ZHEJIANG GUXIANDAO POLYESTER DOPE DYED YARN CO., LTD , https://www.htpolyesteryarn.com
