Volume 91 Issue 33 | p. 5 | News of The Week
Issue Date: August 19, 2013

Through A Window Brightly

Nanotechnology: New material filters out warm, near-infrared light while letting visible light through
Department: Science & Technology
News Channels: Materials SCENE, Environmental SCENE
Keywords: electrochromic, smart windows, tin-doped indium oxide, niobium oxide

Window shades and blinds could become light-blocking relics, thanks to a nanocomposite material that dramatically darkens or simply filters out warm near-infrared light with the flip of a switch. When incorporated in a window, the new material could boost a building’s energy efficiency by keeping out some of the heat from sunlight without blocking visible light.

The new material is electrochromic, meaning that it switches among different light-blocking states when a voltage is applied. Other . . .

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