According to foreign media New Atlas, currently there are energy-saving "smart glasses" that can shield heat rays from the sun in some ways, thereby reducing the need for operating air-conditioning systems. However, such systems still require power to operate. Now, scientists from Australia's Royal Melbourne Institute of Technology have developed a coating that can make existing glass smart and without electricity.
The self-regulating coating consists of relatively inexpensive vanadium dioxide and is only 50-150 nm thick. This is about 1,000 times thinner than a human hair.
At surface temperatures below 67°C, vanadium dioxide acts as an insulator, helping to prevent indoor heat from escaping through the glass - while also allowing the entire spectrum of the sun to enter the entire spectrum from the outside. However, at temperatures above 67°C, it can turn into a metal that blocks heat-induced infrared solar radiation.
This means that when the temperature is lower, the room will be warmer, and when the temperature is higher, the room will be cooler, which can reduce the use of heating and air conditioning systems. In addition, the user can also use the dimmer switch to cover the light blocking effect of the coating.
Previously, in order to apply the vanadium dioxide coating, a special layer or platform had to be created on the surface. However, the RMIT team has developed a way to coat the coating directly on the surface of the glass without the need for a platform. The research team now hopes the system can be commercialized as soon as possible.
Chief scientist Professor Madhu Bhaskaran said: “Our technology will likely reduce the rise in air conditioning and heating costs, and significantly reduce the carbon footprint of various buildings. Our energy crisis solution not only comes from renewable sources, but also eliminates energy waste. Smart technology is absolutely critical."
The results of this research were recently published in the "Scientific Report" magazine.
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