An anonymous reader writes "A new technique allows allows thermocrystals to be created that can manipulate heat (a vibration of the atomic lattice of a material). Predicted manipulations include the ability to selectively transmit / reflect or concentrate heat much like light waves can be manipulated by lenses and mirrors. Applications range from better thermoelectric devices to switchable heat insulating/transmitting materials etc. Perhaps this will result in better cooling/heating mechanisms or more efficient engines."
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