It’s a small change that makes a big difference. Researchers have developed a method that uses a one-degree change in temperature to alter the color of light that a semiconductor emits. The method, which uses a thin-film semiconductor layered on top of a heat-sensitive substrate material, offers a path to electronically triggering changes in the properties of semiconductor materials.
from Engineering and Construction News – ScienceDaily https://www.sciencedaily.com/releases/2016/10/161028090254.htm
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