10 September 2014 Ultrahigh contrast and large-bandwidth thermal rectification in near-field electromagnetic thermal transfer between nanoparticles
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Abstract
We exploit the unique properties of electromagnetic waves in nanophotonic structures to enhance the capabilities for active control of electromagnetic thermal transfer at nanoscale. We show that the near-field thermal transfer between two nanospheres can exhibit thermal rectification effect with very high contrast, and with large operating bandwidth. In this system, the scale invariance properties of the resonance modes result in a large difference in the coupling constants between relevant modes in the forward and reverse scenarios. Such a difference in coupling constants provides a new mechanism for thermal rectification.
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Linxiao Zhu, Linxiao Zhu, Clayton R. Otey, Clayton R. Otey, Shanhui Fan, Shanhui Fan, } "Ultrahigh contrast and large-bandwidth thermal rectification in near-field electromagnetic thermal transfer between nanoparticles", Proc. SPIE 9161, Nanophotonic Materials XI, 91610T (10 September 2014); doi: 10.1117/12.2061262; https://doi.org/10.1117/12.2061262
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