We show numerically the phase change material Ge3Sb2Te6 (GST) with special configuration as a heat modulator in the regime of near-field radiative heat transfer (NFRHT). The ability of GST to allow ultrafast reversible switch between two phases endows it great potential in practical modulation application. By designing silicon carbide (SiC) nanoholes (NHs) filled with GST, this configuration could achieve a considerable modulation effect and large near-field radiative heat flux. The underlying mechanism can be explained by the observation that the entire configuration supports either hyperbolic modes or surface phonon polaritons (SPhPs) resonance modes and even the combination of both modes, thereby resulting in the remarkable modulation effect. In addition, the effects of the volume filling factor and graphene coverage are also investigated at the vacuum gap distance of 100 nm. With graphene coverage, the modulation factor can be further improved to as high as 0.72 achieved at the volume filling factor of 0.6 with temperature difference of 20 K. The proposed configuration has the potential to effectively modulate heat in the near-field regime for designing heat modulation applications in the future.
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Ultrafast Tunable Near-Field Radiative Thermal Modulator Made of Ge3Sb2Te6
Lu Lu,
Lu Lu
State Key Laboratory of Coal Combustion,
Huazhong University of
Science and Technology,
Wuhan, Hubei 430074, China;
Huazhong University of
Science and Technology,
Wuhan, Hubei 430074, China;
Shenzhen Huazhong University of Science and
Technology Research Institute,
Shenzhen, Guangdong 518057, China
Technology Research Institute,
Shenzhen, Guangdong 518057, China
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Jinlin Song,
Jinlin Song
State Key Laboratory of Coal Combustion,
Huazhong University of
Science and Technology,
Wuhan, Hubei 430074, China;
Huazhong University of
Science and Technology,
Wuhan, Hubei 430074, China;
Shenzhen Huazhong University of Science and
Technology Research Institute,
Shenzhen, Guangdong 518057, China
Technology Research Institute,
Shenzhen, Guangdong 518057, China
Search for other works by this author on:
Kun Zhou,
Kun Zhou
State Key Laboratory of Coal Combustion,
Huazhong University of
Science and Technology,
Wuhan, Hubei 430074, China;
Huazhong University of
Science and Technology,
Wuhan, Hubei 430074, China;
Shenzhen Huazhong University of
Science and Technology Research Institute,
Shenzhen, Guangdong 518057, China
Science and Technology Research Institute,
Shenzhen, Guangdong 518057, China
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Han Ou,
Han Ou
State Key Laboratory of Coal Combustion,
Huazhong University of
Science and Technology,
Wuhan, Hubei 430074, China;
Huazhong University of
Science and Technology,
Wuhan, Hubei 430074, China;
Shenzhen Huazhong University of
Science and Technology Research Institute,
Shenzhen, Guangdong 518057, China
Science and Technology Research Institute,
Shenzhen, Guangdong 518057, China
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Qiang Cheng,
Qiang Cheng
State Key Laboratory of Coal Combustion,
Huazhong University of
Science and Technology,
Wuhan, Hubei 430074, China;
Huazhong University of
Science and Technology,
Wuhan, Hubei 430074, China;
Shenzhen Huazhong University of
Science and Technology Research Institute,
Shenzhen, Guangdong 518057, China
e-mail: chengqiang@mail.hust.edu.cn
Science and Technology Research Institute,
Shenzhen, Guangdong 518057, China
e-mail: chengqiang@mail.hust.edu.cn
1Corresponding author.
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Zixue Luo
Zixue Luo
State Key Laboratory of Coal Combustion,
Huazhong University of
Science and Technology,
Wuhan, Hubei 430074, China;
Huazhong University of
Science and Technology,
Wuhan, Hubei 430074, China;
Shenzhen Huazhong University of Science and
Technology Research Institute,
Shenzhen, Guangdong 518057, China
Technology Research Institute,
Shenzhen, Guangdong 518057, China
Search for other works by this author on:
Lu Lu
State Key Laboratory of Coal Combustion,
Huazhong University of
Science and Technology,
Wuhan, Hubei 430074, China;
Huazhong University of
Science and Technology,
Wuhan, Hubei 430074, China;
Shenzhen Huazhong University of Science and
Technology Research Institute,
Shenzhen, Guangdong 518057, China
Technology Research Institute,
Shenzhen, Guangdong 518057, China
Jinlin Song
State Key Laboratory of Coal Combustion,
Huazhong University of
Science and Technology,
Wuhan, Hubei 430074, China;
Huazhong University of
Science and Technology,
Wuhan, Hubei 430074, China;
Shenzhen Huazhong University of Science and
Technology Research Institute,
Shenzhen, Guangdong 518057, China
Technology Research Institute,
Shenzhen, Guangdong 518057, China
Kun Zhou
State Key Laboratory of Coal Combustion,
Huazhong University of
Science and Technology,
Wuhan, Hubei 430074, China;
Huazhong University of
Science and Technology,
Wuhan, Hubei 430074, China;
Shenzhen Huazhong University of
Science and Technology Research Institute,
Shenzhen, Guangdong 518057, China
Science and Technology Research Institute,
Shenzhen, Guangdong 518057, China
Han Ou
State Key Laboratory of Coal Combustion,
Huazhong University of
Science and Technology,
Wuhan, Hubei 430074, China;
Huazhong University of
Science and Technology,
Wuhan, Hubei 430074, China;
Shenzhen Huazhong University of
Science and Technology Research Institute,
Shenzhen, Guangdong 518057, China
Science and Technology Research Institute,
Shenzhen, Guangdong 518057, China
Qiang Cheng
State Key Laboratory of Coal Combustion,
Huazhong University of
Science and Technology,
Wuhan, Hubei 430074, China;
Huazhong University of
Science and Technology,
Wuhan, Hubei 430074, China;
Shenzhen Huazhong University of
Science and Technology Research Institute,
Shenzhen, Guangdong 518057, China
e-mail: chengqiang@mail.hust.edu.cn
Science and Technology Research Institute,
Shenzhen, Guangdong 518057, China
e-mail: chengqiang@mail.hust.edu.cn
Zixue Luo
State Key Laboratory of Coal Combustion,
Huazhong University of
Science and Technology,
Wuhan, Hubei 430074, China;
Huazhong University of
Science and Technology,
Wuhan, Hubei 430074, China;
Shenzhen Huazhong University of Science and
Technology Research Institute,
Shenzhen, Guangdong 518057, China
Technology Research Institute,
Shenzhen, Guangdong 518057, China
1Corresponding author.
Contributed by the Heat Transfer Division of ASME for publication in the JOURNAL OF HEAT TRANSFER. Manuscript received August 17, 2018; final manuscript received April 10, 2019; published online May 14, 2019. Assoc. Editor: Gennady Ziskind.
J. Heat Transfer. Jul 2019, 141(7): 072701 (8 pages)
Published Online: May 14, 2019
Article history
Received:
August 17, 2018
Revised:
April 10, 2019
Citation
Lu, L., Song, J., Zhou, K., Ou, H., Cheng, Q., and Luo, Z. (May 14, 2019). "Ultrafast Tunable Near-Field Radiative Thermal Modulator Made of Ge3Sb2Te6." ASME. J. Heat Transfer. July 2019; 141(7): 072701. https://doi.org/10.1115/1.4043573
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