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  • Author(s):
    Ramesh Shrestha, Yuxuan Luan, Xiao Luo, Summi Shi, Teng Zhang, Phil Smith, Wei Gong, Michael Bockstaller, Tenfei Luo, Renkun Chen, Kedar Hippalgaonkar, Shen Shen

    Thermal rectification is an exotic thermal transport phenomenon which allows heat to transfer in one direction but block the other. We demonstrate an unusual dual-mode solid-state thermal rectification effect using a heterogeneous “irradiated-pristine” polyethylene nanofiber junction as a nanoscale thermal diode, in which heat flow can be rectified in both directions by changing the working temperature. For the nanofiber samples measured here, we observe a maximum thermal rectification factor…

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