Nanyang Technological University (NTU) scientists have developed a smart window which can darken or brighten without the need for an external power source.
This unique self-tinting window requires zero electricity to operate and is also a rechargeable battery. The window’s stored energy can be used for other purposes, such as to light up low-powered electronics like a light emitting diode (LED).
Currently, the window solutions in the market are either using permanent tinting which cannot brighten at night or are windows that can change its light transmission properties only with an external power source.
The NTU smart window however can be turned into a cool blue tint in bright daylight, cutting light penetration by about half, and then reverts back to clear glass at night or as required.
This breakthrough research led by NTU Professor Sun Xiaowei, was published recently in Nature Communications, a prestigious peer-reviewed scientific journal.
How it works
The trick to making the self-powered smart window is a new technology developed by Prof Sun’s team from NTU’s School of Electrical and Electronic Engineering.
“Our new smart electrochromic window is bi-functional; it is also a transparent battery,” Prof Sun explained. “It charges up and turns blue when there is oxygen present in the electrolyte – in other words, it breathes.”
The Latest on: Smart window
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