Dual-mode solid-state thermal rectification
Dual-mode solid-state thermal rectification
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DOI：
10.1038/s41467-020-18212-2
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发表时间：
2020-08-28
影响因子：
16.6
通讯作者：
Shen, Sheng
中科院分区：
文献类型：
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作者：
Shrestha, Ramesh;Luan, Yuxuan;Shen, Sheng
热整流是一种奇特的热传输现象，它允许热量在一个方向上传递而阻止另一个方向。我们展示了一种不同寻常的双模固态热整流效应，使用非均质“辐照原始”聚乙烯纳米纤维结作为纳米级热二极管，其中热流可以通过改变工作温度向两个方向整流。对于这里测量的纳米纤维样品，我们观察到最大的热整流因子接近50%，这只需要很小的温度偏差
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 as large as similar to 50%, which only requires a small temperature bias of