Keep cool in summer and warm in winter

That’s what new smart glass can do for you. Researchers have demonstrated a prototype of a new smart glass consisting of a 3D printed plastic panel covered by a thin chamber. When the chamber is filled with the fluid methyl salicylate, the retro-reflective structures become transparent.It can be used in cars to keep them cool in the sun, when parked, or make office buildings more energy efficient. The technology can also be used to make roof panels that keep houses cool in the summer and warm in the winter.