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Transport properties

Transport properties

Grain boundaries limit heat flow in diamond

30 Apr 2018 Isabelle Dumé
The experiment
(Top) Picture of thermal measurement setup in the Goodson lab, Stanford University. (bottom) The sample is placed on a high-precision stage and raster scanned to produce 2D images of the thermal conductivity (shown on right). This image shows excellent correspondence with the grain structure (shown by the colorful mosaic in the middle) – which is obtained using electron diffraction in a scanning electron microscope. Image credit: Aditya Sood, Stanford University.
Imperfections such as grain boundaries in a material affect how efficiently it can transport heat at

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Isabelle Dumé is a contributing editor to Physics World
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