Molecular Thermoelectric Devices (Simulation) (image) University of Arizona Caption A "forest" of molecules holds the promise of turning waste heat into electricity. UA physicists discovered that because of quantum effects, electron waves traveling along the backbone of each molecule interfere with each other, leading to the buildup of a voltage between the hot and cold electrodes (the golden structures on the bottom and top). Credit Justin Bergfield, University of Arizona Usage Restrictions Usage is granted only in conjunction with reporting/posting of this news release. 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.