Materials -- Engineering Heat Transport (IMAGE) DOE/Oak Ridge National Laboratory Caption In a perfect thermoelectric crystal, vibrational waves decompose and localize. A diagram of simulated phonon energy versus momentum reveals exactly where heat transport stops because of vibrations interfering nonlinearly--the flat band between the curved top and V-shaped bottom bands. Credit Michael Manley/Oak Ridge National Laboratory, U.S. Dept. of Energy Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.