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Phonon‐Engineered Thermoelectricity
In article 2209779, Mahmoud I. Hussein, Kris A. Bertness, and co‐workers demonstrate a reduction in the in‐plane thermal conductivity of semiconductor membranes by coupling heat‐carrying phonons to the localized phonon resonances emerging from deposited nanopillars. This full‐spectrum resonance–hybridization mechanism decouples the electrical and thermal properties,...
Thermoelectric materials convert heat into electricity through thermally driven charge transport in solids or vice versa for cooling. To compete with conventional energy‐conversion technologies, a thermoelectric material must possess the properties of both an electrical conductor and a thermal insulator. However, these properties are normally mutually exclusive because of the interconnection between...
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