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Researchers from UCLA have demonstrated a class of optical materials that control how heat radiation is directed from an object. The advance could improve the efficiency of energy conversion systems and enable more effective sensing and detecting technologies.
The work involves a special class of materials that manipulate how thermal radiation travels through such materials, similar to the way that overlapping blinds direct the angle of visible light through a window.
Silicon wafers coated with the gradient ENZ materials viewed through a thermal imaging camera. Courtesy of Raman Laboratory/UCLA. Previously, a fundamental challenge had prevented materials from directing their heat in specific directions over a broad spectrum to…READ MORE