Twists between layers of crystalline sheets block heat going through layers

Random twists between layers of crystalline sheets block heat going through the layers, but still maintain good heat flow along the sheets. Researchers measured an astonishing factor of 900 in the difference in heat flow. [Research supported by U.S. National Science Foundation grants DMR ...This is an NSF Multimedia Gallery item.
Source: NSF Multimedia Gallery - Category: Science Source Type: video
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