Applied to windows in the summer, the film could passively cool a building while still letting in a good amount of light. At temperatures of 85 F or higher, the spheres essentially squeeze out all their water and shrink into tight bundles of fibers that reflect light in a different way, turning the material translucent. Fang and his colleagues realized that this limitation came down to the particle size: The particles used previously shrank to a diameter of about nanometers — smaller than the wavelength of infrared light — making it easy for heat to pass right through. You'll need this to untransparenticize the window again! NET Framework.
And how hard can it be to write a little task bar application to make that work? In their more compact configurations, the microparticles give the normally transparent film a more translucent or frosted look. Nicholas Fang, a professor of mechanical engineering at MIT, says the material provides an affordable and energy-efficient alternative to existing smart window technologies. When exiting, See Through Windows will change all windows back the way they were.