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Chen, Huan (author), Zhang, Zhaoyu (author), Guo, R. (author), Han, Xutao (author), Zhang, Xuanrui (author), Lin, Junhao (author)The gas state of the insulating gas significantly impacts the development and extent of the partial discharge (PD) in gas-insulated switchgear (GIS). Correlating these two factors allows for a more comprehensive diagnosis of insulation defects. At present, the ultrahigh-frequency (UHF) method has been widely used for PD detection in GIS....journal article 2024
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Li, Xinhong (author), Ma, Jie (author), Han, Ziyue (author), Zhang, Y. (author), Yang, M. (author)This paper presents a game theory methodology for risk management of urban natural gas pipelines, which is a collaborative participation mechanism of the stakeholders, including government, pipeline companies, and the public. Firstly, the involvement proportion of stakeholders in risk management under rational conditions is estimated by the...journal article 2023
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Wang, Xinyue (author), Yang, Zhoudong (author), Wang, Boya (author), Chen, Wei (author), Zhang, Kouchi (author), Zhang, Jing (author), Fan, J. (author), Liu, P. (author)Power modules applied in offshore applications are facing risks of corrosion failures on die-attach materials due to high humidity and H<sub>2</sub>S exposure. To investigate such corrosion behavior for sintered die-attach materials, we conducted a study with four groups of samples fabricated using copper and silver metal particles under...journal article 2023
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Hu, Jie (author), Liu, Zhengxuan (author), Ma, Guochuan (author), Zhang, Guoqiang (author), Ai, Zhengtao (author)Past studies reveal that air infiltration through the building envelope and its impact on the indoor environment and energy consumption are significantly influenced by climate characteristics. However, little relevant information is available for buildings in southern China, where the building design traditionally follows a philosophy of...journal article 2023
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Rabiee, Hesamoddin (author), Ge, Lei (author), Zhao, Jing (author), Zhang, Xueqin (author), Li, Mengran (author), Hu, Shihu (author), Smart, Simon (author), Rufford, Thomas E. (author), Zhu, Zhonghua (author)Regulating the rational wettability on gas-diffusion electrodes (GDEs) plays a pivotal role to improve the efficiency of CO<sub>2</sub>RR via fine-tuning the reaction zone and boosting the formation of triple-phase interfaces. Herein, we present a wettability regulation strategy that modulates the triple-phase reaction zone in the catalyst...journal article 2022
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Zhang, Z. (author), Peeters, J.W.R. (author), Popovich, V. (author), Ayas, C. (author)Hydrogen plays a vital role in the utilisation of renewable energy, but ingress and diffusion of hydrogen in a gas turbine can induce hydrogen embrittlement on its metallic components. This paper aims to investigate the hydrogen transport in a non-hydride forming alloy such as Alloy 690 used in gas turbines inspired by service conditions of...journal article 2022
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Cai, Jitao (author), Wu, Jiansong (author), Yuan, S. (author), Kong, Desheng (author), Zhang, Xiaole (author)Natural gas compartment accommodated in utility tunnels is beneficial in meeting the pressing demand of energy supply and sustainable urban environment. However, the leaking gas characterized by flammable and explosive can pose a huge threat to the safe operation of the utility tunnel. When an unexpected gas leakage accident happens in the...journal article 2022
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Sun, J. (author), Zhan, Teng (author), Sokolovskij, R. (author), Liu, Zewen (author), Sarro, Pasqualina M (author), Zhang, Kouchi (author)Based on our proposed precision two-step gate recess technique, a suspended gate-recessed Pt/AlGaN/GaN heterostructure gas sensor integrated with a micro-heater is fabricated and characterized. The controllable two-step gate recess etching method, which includes O2 plasma oxidation of nitride and wet etching, improves gas sensing performance....journal article 2021
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Wang, Xuerui (author), Zhou, Tao (author), Zhang, Ping (author), Yan, Wenfu (author), Li, Yongguo (author), Peng, Li (author), Veerman, Dylan (author), Shi, Mengyang (author), Gu, Xuehong (author), Kapteijn, F. (author)Capture and storage of the long-lived <sup>85</sup>Kr is an efficient approach to mitigate the emission of volatile radionuclides from the spent nuclear fuel reprocessing facilities. However, it is challenging to separate krypton (Kr) from xenon (Xe) because of the chemical inertness and similar physical properties. Herein we prepared high...journal article 2021
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Li, Xinhong (author), Zhang, Yi (author), Abbassi, Rouzbeh (author), Yang, M. (author), Zhang, Renren (author), Chen, Guoming (author)Urban gas pipelines usually have high structural vulnerability due to long service time. The locations across urban areas with high population density make the gas pipelines easily exposed to external activities. Recently, urban pipelines may also have been the target of terrorist attacks. Nevertheless, the intentional damage, i.e. terrorist...journal article 2021
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Middelburg, L.M. (author), Ghaderi, Mohammadamir (author), Bilby, David (author), Visser, J.H. (author), Zhang, Kouchi (author), Wolffenbuttel, R.F. (author)Impedance spectroscopy in the frequency range 100 Hz to 10 kHz has been applied to the Inter-Digitated Electrode (IDE) structure that is conventionally operated as a resistive sensor for the measurement of Particulate Matter (PM). The measurement of both the in-phase (resistive) and out-of-phase (capacitive) components of the impedance over this...conference paper 2020
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Liu, Tianhan (author), Qin, Hongbo (author), Yang, Daoguo (author), Zhang, Kouchi (author)For the purpose of exploring the application of two-dimensional (2D) material in the field of gas sensors, the adsorption properties of gas molecules, CO, CO<sub>2</sub>, CH<sub>2</sub>O, O<sub>2</sub>, NO<sub>2</sub>, and SO2 on the surface of monolayered tin selenium in β phase (β-SnSe) has been researched by first principles calculation...journal article 2019
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Zhang, Jian (author), Sokolovskij, R. (author), Chen, Ganhui (author), Zhu, Yumeng (author), Qi, Yongle (author), Lin, Xinpeng (author), Li, Wenmao (author), Zhang, G. (author), Jiang, Yu-Long (author), Yu, Hongyu (author)In this paper, a method to extend the detection range of hydrogen sulfide (H<sub>2</sub>S) gas sensor is demonstrated. The sensor is based on AlGaN/GaN high electron mobility transistors (HEMTs) with Pt gate. It is observed that the as-fabricated devices exhibited sensing signal saturation at 30 ppm H<sub>2</sub>S exposure in dry air. A pre...journal article 2019
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Sun, J. (author), Sokolovskij, R. (author), Iervolino, E. (author), Santagata, F. (author), Liu, Zewen (author), Sarro, Pasqualina M (author), Zhang, Kouchi (author)A suspended AlGaN/GaN high electron mobility transistor (HEMT) sensor with a tungsten trioxide (WO 3 ) nanofilm modified gate was microfabricated and characterized for ppm-level acetone gas detection. The sensor featured a suspended circular membrane structure and an integrated microheater to select the optimum working temperature. High working...journal article 2019
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Feng, Chuang (author), Qin, Hongbo (author), Yang, Daoguo (author), Zhang, Kouchi (author)CH <sub>2</sub> O is a common toxic gas molecule that can cause asthma and dermatitis in humans. In this study the adsorption behaviors of the CH <sub>2</sub> O adsorbed on the boron nitride (BN), aluminum nitride (AlN), gallium nitride (GaN), indium nitride (InN), boron phosphide (BP), and phosphorus (P) monolayers were investigated using...journal article 2019
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Sokolovskij, R. (author), Zhang, Jian (author), Iervolino, E. (author), Zhao, Changhui (author), Santagata, F. (author), Wang, F. (author), Yu, Hongyu (author), Sarro, Pasqualina M (author), Zhang, Kouchi (author)AlGaN/GaN high electron mobility transistor (HEMT)-based sensors with catalytic platinum gate were micro-fabricated on commercially available epitaxial wafers and extensively characterized for ppm level hydrogen sulfide (H<sub>2</sub>S) detection for industrial safety applications. High operating temperature above 150 °C enabled large signal...journal article 2018
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Santagata, F. (author), Sun, J. (author), Iervolino, E. (author), Yu, H. (author), Wang, F. (author), Zhang, Kouchi (author), Sarro, Pasqualina M (author), Zhang, Guoyi (author)Purpose: The purpose of this paper is to demonstrate a novel 3D system-in-package (SiP) approach. This new packaging approach is based on stacked silicon submount technology. As demonstrators, a smart lighting module and a sensor systems were successfully developed by using the fabrication and assembly process described in this paper. Design...journal article 2018
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Li, Y. (author), Han, Qinglin (author), Zhang, Guangjun (author), Horvath, I. (author)Robotic wire and arc additive manufacturing (WAAM) systems are required to provide predictable and efficient operations to fabricate solid metallic parts with high morphological fidelity and geometric accuracy. Since the metallic parts are fabricated based on a layer-by-layer principle, the interactions between the neighboring beads and...journal article 2018
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Hu, Fa-Fei (author), Tang, H. (author), Ye, H. (author), Chen, X. (author), Zhang, Kouchi (author)The sensing behavior of monolayer tin sulfide (SnS) for four gas molecules (NH<sub>3</sub>, NO<sub>2</sub>, CO, and H<sub>2</sub>O) are studied by the first-principle calculation based on density-functional theory. We calculate adsorption energy, adsorption distance, and Hirshfeld charge to estimate the adsorption ability of monolayer SnS for...journal article 2017