Researchers at the University of Texas at Austin have taken a big step toward smart windows. They have developed a new engineering material that allows the windows to transmit light without transmitting heat, or allows windows to transmit heat while blocking light. This material allows occupants to more precisely control the energy and light passing through the windows, thereby significantly reducing the cost of cooling or heating inside the building. According to the report of the Physicist Organization Network on July 23 (Beijing time), in 2013 the team of chemical engineering professor Delia Milin was the first to develop dual-band electrochromic materials worldwide. The optical characteristics of it can selectively control visible light and heat-generating near-infrared light. Recently, the team made two major breakthroughs in electrochromic materials, one is a highly selective cooling mode, and the other is a highly selective heating mode, which was considered impossible a few years ago. The two results were published in the Nano Express and the Journal of the American Chemical Society. Mi Lirong's team used a nanocomposite material to achieve a cooling model that can block 90% of near-infrared light and allow 80% of visible light to pass through. This can significantly reduce summer cooling energy without affecting the building's internal lighting. Consumption. On the other hand, the team used a proof-of-concept approach to demonstrate that a coating containing titanium dioxide nanocrystals can be used to achieve the heating mode of the material. In this mode, visible light is blocked while near-infrared light can pass through. This kind of design can be very useful in sunny winters, because in this mode the occupant can pass as much near-infrared light through the window as possible to transfer heat and reduce the glare of the sun. Both modes require a weak voltage, but due to the different voltages used, this material can selectively block visible or infrared light for cooling or heating. In order to optimize the performance of electrochromic materials, they designed the nanocomposite into a multi-porous network that provides passage for the flow of electrons and ions, thus significantly improving the cooling and heating mode switching speeds: It takes only a few minutes to complete the mode switch, and the previous material takes several hours to complete. “These two developments demonstrate that it is possible to perform complex and dynamic control of lighting. I believe that our well-developed nanocomposites can meet the performance and cost requirements of commercial smart windows,†said Mi Lirong. (Reporter Liu Yuanyuan) Shower Head,Round Rainfall Shower Head,High Pressure Rainfall Shower Head,Low Flow Shower Head,Top Spray,overhead shower Kaiping Rainparty Sanitary Ware Technology Co.,Ltd. , https://www.rpshower.com