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Giant Interfacial Thermal Resistance Arising From Materials With Mismatched Phonon Structures
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Giant Interfacial Thermal Resistance Arising From Materials With Mismatched Phonon Structures
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Previous researches only reported very small interfacial thermal resistances at room temperature due to limitations in sample combinations and methods. Taking cognizance of the importance of mismatched phonon structures, we report values up to $2*10^{-4}W^{-1}m^{2}K$, thousand times larger than highest values reported to date. This enables substantial tuning of the thermal conductivity in composites, and does not constrain other characteristics. Our findings inspire new design strategies, for heat control in integrated circuits and thermoelectric composites, that harness thermal transport at interfaces.
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