Heterogeneous irradiated-pristine polyethylene nanofiber junction as a high-performance solid-state thermal diode

Abstract In this work, we demonstrate two types of heterogeneous irradiated-pristine polyethylene nanofiber junctions, ‘heavily-irradiated-pristine’ (HI-P) and ‘lightly-irradiated-pristine’ (LI-P) junctions, as high-performance solid-state thermal diodes. The HI-P junction rectifies heat flux in a s...

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Autores principales:	Xiao Luo, Yuxuan Luan, Yutian Cai, Sheng Shen
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/517dd93d201644d5a0bb7de7c768aaca
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spelling	oai:doaj.org-article:517dd93d201644d5a0bb7de7c768aaca2021-12-02T13:19:21ZHeterogeneous irradiated-pristine polyethylene nanofiber junction as a high-performance solid-state thermal diode10.1038/s41598-021-85140-62045-2322https://doaj.org/article/517dd93d201644d5a0bb7de7c768aaca2021-03-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-85140-6https://doaj.org/toc/2045-2322Abstract In this work, we demonstrate two types of heterogeneous irradiated-pristine polyethylene nanofiber junctions, ‘heavily-irradiated-pristine’ (HI-P) and ‘lightly-irradiated-pristine’ (LI-P) junctions, as high-performance solid-state thermal diodes. The HI-P junction rectifies heat flux in a single direction, while the LI-P junction shows dual-directional rectification under different working temperatures. We accurately model the phase transition of polyethylene nanofibers with a finite temperature range rather than a step function. The finite-temperature-range model suggests that the rectification factor increases with temperature bias and there is a minimum threshold of temperature bias for notable rectification. Besides, the finite-temperature-range model shows better prediction for the heat flow data from experiments, while the step function model tends to overestimate the rectification performance around the optimal length fraction of irradiation. Although both the models show that an optimal rectification occurs when the interface temperatures in the forward and the reverse biases are equal, the optimized rectification factor is determined by the temperature bias and the temperature range of phase transition. This work elucidates the influence of both the temperature bias and the temperature range of phase transition on thermal rectification performance, which could incredibly benefit the evaluation and design of thermal diodes.Xiao LuoYuxuan LuanYutian CaiSheng ShenNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-11 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Xiao Luo Yuxuan Luan Yutian Cai Sheng Shen Heterogeneous irradiated-pristine polyethylene nanofiber junction as a high-performance solid-state thermal diode
description	Abstract In this work, we demonstrate two types of heterogeneous irradiated-pristine polyethylene nanofiber junctions, ‘heavily-irradiated-pristine’ (HI-P) and ‘lightly-irradiated-pristine’ (LI-P) junctions, as high-performance solid-state thermal diodes. The HI-P junction rectifies heat flux in a single direction, while the LI-P junction shows dual-directional rectification under different working temperatures. We accurately model the phase transition of polyethylene nanofibers with a finite temperature range rather than a step function. The finite-temperature-range model suggests that the rectification factor increases with temperature bias and there is a minimum threshold of temperature bias for notable rectification. Besides, the finite-temperature-range model shows better prediction for the heat flow data from experiments, while the step function model tends to overestimate the rectification performance around the optimal length fraction of irradiation. Although both the models show that an optimal rectification occurs when the interface temperatures in the forward and the reverse biases are equal, the optimized rectification factor is determined by the temperature bias and the temperature range of phase transition. This work elucidates the influence of both the temperature bias and the temperature range of phase transition on thermal rectification performance, which could incredibly benefit the evaluation and design of thermal diodes.
format	article
author	Xiao Luo Yuxuan Luan Yutian Cai Sheng Shen
author_facet	Xiao Luo Yuxuan Luan Yutian Cai Sheng Shen
author_sort	Xiao Luo
title	Heterogeneous irradiated-pristine polyethylene nanofiber junction as a high-performance solid-state thermal diode
title_short	Heterogeneous irradiated-pristine polyethylene nanofiber junction as a high-performance solid-state thermal diode
title_full	Heterogeneous irradiated-pristine polyethylene nanofiber junction as a high-performance solid-state thermal diode
title_fullStr	Heterogeneous irradiated-pristine polyethylene nanofiber junction as a high-performance solid-state thermal diode
title_full_unstemmed	Heterogeneous irradiated-pristine polyethylene nanofiber junction as a high-performance solid-state thermal diode
title_sort	heterogeneous irradiated-pristine polyethylene nanofiber junction as a high-performance solid-state thermal diode
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/517dd93d201644d5a0bb7de7c768aaca
work_keys_str_mv	AT xiaoluo heterogeneousirradiatedpristinepolyethylenenanofiberjunctionasahighperformancesolidstatethermaldiode AT yuxuanluan heterogeneousirradiatedpristinepolyethylenenanofiberjunctionasahighperformancesolidstatethermaldiode AT yutiancai heterogeneousirradiatedpristinepolyethylenenanofiberjunctionasahighperformancesolidstatethermaldiode AT shengshen heterogeneousirradiatedpristinepolyethylenenanofiberjunctionasahighperformancesolidstatethermaldiode
_version_	1718393271041916928

Heterogeneous irradiated-pristine polyethylene nanofiber junction as a high-performance solid-state thermal diode

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