Israeli researchers say they have invented a reusable face mask. This mask can kill the coronavirus with heat by drawing power from a mobile phone charger.
The disinfecting(消毒) process takes about 30 minutes. And users should not wear the mask while it is plugged in, said Professor Yair Ein-Eli, who led the research team at Technion University in Haifa. The new mask has a USB port that connects to a power source such as a standard cellphone charger. The charger heats an inner layer of carbon fibres to 70 degrees Celsius, high enough to kill viruses.
Ein-Eli said disposable masks were in high demand globally during the health crisis, but they were not economically or environmentally friendly. “You have to make it reusable and friendly, and this is our solution,” he said.
During testing, the prototype was exposed to 20 heating cycles, each for half an hour, with no impact on durability, Ein-Eli said. “We can guarantee it up to a few dozen cycles, without any risk,” he added. The prototype looks like a standard N95 face mask. It has a valve(阀) at the front and bands to hold it in place around the head.
The researchers submitted a patent for the mask in the United States in late March. They say they are discussing commercializing the product with the private sector. It will likely sell at a $1 over the price of a typical disposable face mask, the researchers say.
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