I was reading about the development of new nanocrystal materials which could allow heat to be manipulated in the same way we now do with light: http://web.mit.edu/newsoffice/2013/how-to-treat-heat-like-light-0111.html What shall we call this approach? Thermoptics? I'm not sure from reading the article whether this will allow us to surpass the limits and constraints of Carnot's Law, or whether this stuff can only function within those limits. It seems to me the article implies that we can surpass the Carnot limits. What could this be used to improve, and how?