Looking for a material that can be turned into a reflective material (such as a mirror) by electricity and then becomes transparent without electricity
A sheet of glass covered a mirror at the back, and it reflected; took the mirror away and made it transparent!!Good, perfect answer......
When the liquid crystal is added to the electric field, the polymer grain will be oriented and become opaque and reflective. The electric field is restored to a disordered high transmittance mode. This is the principle of liquid crystal display, but it is a single color only, very mature. A new generation of fully transparent glass displays, or automotive active color glass, will use the technology
We can make temperature change materials, the temperature is different, different colors, I wonder if it can apply
