ORCID Profile
0000-0003-4826-3339
Current Organisation
Jiangsu University
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Publisher: Elsevier BV
Date: 02-2017
Publisher: MDPI AG
Date: 06-03-2021
Abstract: This paper presents a novel thermopile chip in which the resonant cavity structure was fully utilized as an absorber by an optical design. The resonant cavity absorber structure was designed using Al as anthe bottom reflective metal layer, air as the intermediate dielectric layer, and SiO2/TiN/Si3N4 sandwich layers as the top absorption layer, while the bottom reflective metal (Al) was deposited on the cold junctions of the thermopile. The simulation and calculation results show that the thermopile chip with resonant cavity absorber structure not only has great infrared absorption in the wide infrared absorption range but also can effectively prevent the cold junctions from absorbing infrared radiation and inhibit the rise of temperature. As a result, the temperature difference between the hot junctions and the cold junctions is increased, and the responsivity of the thermopile chip is further improved. Moreover, the duty cycle of the thermopile chip is greatly improved due to the double-layer suspension structure. Compared with the traditional thermopile chip structure, the sizes of the thermopile chip with the resonant cavity absorber structure can be further reduced while maintaining responsivity and specific detectivity.
Publisher: Springer Science and Business Media LLC
Date: 12-2007
Publisher: Elsevier BV
Date: 02-2021
Publisher: Elsevier BV
Date: 11-2020
Publisher: Elsevier BV
Date: 10-2018
Publisher: Elsevier BV
Date: 02-2016
Publisher: MDPI AG
Date: 21-02-2021
Abstract: The steady-state electrical conduction current for single and multilayer polyimide (PI) nanocomposite films was observed at the low and high electric field for different temperatures. Experimental data were fitted to conduction models to investigate the dominant conduction mechanism in these films. In most films, space charge limited current (SCLC) and Poole–Frenkel current displayed dominant conduction. At a high electric field, the ohmic conduction was replaced by current–voltage dependency. Higher conduction current was observed for nanocomposite films at a lower temperature, but it declined at a higher temperature. PI nanocomposite multilayer films showed a huge reduction in the conduction current at higher electric fields and temperatures. The conclusions derived in this study would provide the empirical basis and early breakdown phenomenon explanation when performing dielectric strength and partial discharge measurements of PI-based nanocomposite insulation systems of electric motors.
Publisher: Elsevier BV
Date: 08-2018
Publisher: Elsevier BV
Date: 09-2018
Publisher: Elsevier BV
Date: 11-2015
Publisher: Royal Society of Chemistry (RSC)
Date: 2021
DOI: 10.1039/D1NR03992J
Abstract: Ball-like and fiber-like morphologies of neodymium (Nd) are grown on the surface of graphene as an efficient catalyst to produce hydrogen via water splitting.
Publisher: Springer Science and Business Media LLC
Date: 12-08-2016
Publisher: MDPI AG
Date: 05-03-2020
Abstract: Ethylene propylene diene monomer (EPDM) is broadly employed as an insulating material for high voltage applications. Surface discharge-induced thermal depolymerization and carbon tracking adversely affect its performance. This work reports the electrical field modeling, carbon tracking lifetime, infrared thermal distribution, and leakage current development on EPDM-based insulation with the addition of nano-BN (boron nitride) contents. Melt mixing and compression molding techniques were used for the fabrication of nanocomposites. An electrical tracking resistance test was carried out as per IEC-60587. Simulation results show that contamination significantly distorted the electrical field distribution and induced dry band arcing. Experimental results indicate that electric field stress was noticed significantly higher at the intersection of insulation and edges of the area of contamination. Moreover, the field substantially intensified with the increasing voltage levels. Experimental results show improved carbonized tracking lifetime with the addition of nano-BN contents. Furthermore, surface temperature was reduced in the critical contamination flow path. The third harmonic component in the leakage current declined with the increase of the nano-BN contents. It is concluded that addition of nano-BN imparts a better tracking failure time, and this is attributed to better thermal conductivity and thermal stability, as well as an improved shielding effect to electrical discharges on the surface of nanocomposite insulators.
Publisher: Elsevier BV
Date: 02-2017
Publisher: Elsevier BV
Date: 04-2016
Publisher: Springer Science and Business Media LLC
Date: 14-10-2015
Publisher: Springer Science and Business Media LLC
Date: 07-2019
Publisher: Elsevier BV
Date: 10-2016
Publisher: Springer Science and Business Media LLC
Date: 02-2016
Publisher: Springer Science and Business Media LLC
Date: 20-08-2020
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C6RA14242G
Abstract: The morphology of NiCo 2 O 4 can be controlled by changing the kinds of alkali source and the addition of NH 4 F, influencing its electrochemical properties.
Publisher: Elsevier BV
Date: 2017
Publisher: Springer Science and Business Media LLC
Date: 23-02-2016
Publisher: Elsevier BV
Date: 08-2016
Start Date: 2019
End Date: 2021
Funder: National Natural Science Foundation of China
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