Here’s my proposal for today:
In our group we discussed ways to reverse the thermochromic reaction. Since I’m looking to create a shading device, I want the shading material to become more opaque as the light/heat increases. To do this, we either thought I could run current through the fabric and have it shut off when a temperature sensor reached a certain high temperature, or that I should look for a material that behaves the way I want to begin with!
There is a way to reverse the thermocromic process and make it a film, which is used in thermochromic windows that remind me of those transition lenses people used to wear, where they looked like regular glasses when they are indoors, but when they went out into the sun they became sunglasses!
This is the effect I’m looking for, but I’m not sure how to duplicate it myself:
http://youtu.be/WylYlPfXxJ4 (@55 sec)