Imagine that in the cold winter, you don’t need to put on five or six layers of clothes. You only need to put on a light jacket, adjust to a comfortable temperature, and you can go out.
At a recent meeting of the American Chemical Society, the US Army Natick Soldier Research said they are working on a technology that can achieve temperature regulation on ordinary fabrics and may eventually enter the consumer market. market.
In extremely cold weather, soldiers would wear up to seven layers of clothing, making them feel heavy and make movement difficult. Inspired by Yi Cui, a researcher at Stanford University, researchers at the U.S. Army’s Natick Soldier Research and Development Center began to study the optimization of fine silver nanowire technology, coating ordinary fabrics such as cotton or polyester with a thin silver nanowire coating. Volts of electrical energy can produce large amounts of heat. They are also developing a control system that would allow soldiers to manually control the temperature.
The thin silver nanowire coating does not alter the flexibility of the fabric and also passes detergent testing tests. They have already made gloves using optimized fine silver nanowire-coated fabrics, which will soon be applied to clothing.
“We found that if we connected a battery or power source to the treated fabric, we could increase the temperature of the fabric to 110 degrees, which is a huge change,” said D’Angelo, a researcher at the U.S. Army’s Natick Soldier Research and Development Center. Of course soldiers don’t need that much heat, but this shows the potential of the fabric, which can be heated up using only three volts of electricity, which only has the power of a watch battery.”
However, three volts of electricity is the energy required to heat 1 inch by 1 inch of fabric. A full set of clothes requires more power, and the battery becomes a heavy burden at this time. The research center is working with professors at the University of California, San Diego to develop an elastic, stretchable battery that can be incorporated into textiles and weigh next to nothing.
In fact, many clothes that can adjust temperature have appeared on the market before. ClimaWare, founded by MIT student Kranthi Vistakula, uses the Peltier effect. Depending on the direction of the current, heat absorption and heat release will occur respectively). One of the two metals connected to each other will release heat and the other will absorb heat. However, ClimaWare is too geeky in image and is not suitable for ordinary people’s daily wear.
During the 2016 Autumn and Winter Paris Fashion Week, the French high-end brand Courrèges showed a series of heated coats, which have a built-in heating system. Press the button on the cuffs to heat the back, shoulders and pockets, and can be charged through an iPhone charger.
Courrèges 2017 Autumn and Winter
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