Qi Chen
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View article: Evaluation of damage evolution in pure magnesium during surrogate high-energy electron irradiation for Brachytherapy seed application
Evaluation of damage evolution in pure magnesium during surrogate high-energy electron irradiation for Brachytherapy seed application Open
Evaluation of damage evolution effects in biodegradable pure Mg was carried out, using transmission electron microscope as surrogate irradiation for high-energy radionuclide β decay in Brachytherapy. Time-dependent quantitative defect prod…
View article: A tunable encoder with circular dichroism and polarization encoding function based on a layered metastructure in the GHz range
A tunable encoder with circular dichroism and polarization encoding function based on a layered metastructure in the GHz range Open
In this paper, based on a layered metastructure, a tunable encoder capable of circular dichroism (CD) and polarization conversion (PC) is researched, which contains one common medium, magnetized plasma, and yttrium iron garnet (YIG). The l…
View article: Low-dose damage evolution in pure magnesium under electron irradiation: Effect of foil orientation and pre-existing dislocations
Low-dose damage evolution in pure magnesium under electron irradiation: Effect of foil orientation and pre-existing dislocations Open
Low-dose damage evolution in commercial purity (99.95 wt%) magnesium has been investigated, under 200 keV electron irradiation at room temperature, up to ∼0.03 displacements per atom. Quantitative defect production and evolution statistics…
View article: Analysis of strength size effect and failure mechanism of asphalt mixtures based on discrete element method
Analysis of strength size effect and failure mechanism of asphalt mixtures based on discrete element method Open
The purpose of this study is to further investigate the strength size effect and failure mechanism of asphalt mixtures and clarify the strength parameter conversion relationship between standard and non-standard size samples. The article e…
View article: Heat transfer in superconducting nanowire single-photon detectors: mechanism and modulation
Heat transfer in superconducting nanowire single-photon detectors: mechanism and modulation Open
Superconducting nanowire single-photon detectors (SNSPDs) have been widely applied in quantum information and deep-space exploration owing to their high detection efficiency, low dark count rate, and wide spectral response. In particular, …
View article: Multi-Terminal Wireless Differential Protection Method for Offshore Wind Power Collection Lines
Multi-Terminal Wireless Differential Protection Method for Offshore Wind Power Collection Lines Open
The development of offshore wind power is a crucial step in China’s energy transition and the achievement of carbon peaking and carbon neutrality goals. This paper first introduces a wireless communication technology for independent networ…
View article: Noise characteristics analysis and suppression of optical system based on infrared superconducting single-photon detector
Noise characteristics analysis and suppression of optical system based on infrared superconducting single-photon detector Open
Superconducting nanowire single-photon detector is a kind of refrigerated photon-counting detector with high performance, which can detect extremely weak signals. The noise of optical system is an important factor limiting the sensitivity …
View article: A composite energy‐selective surface based on diode‐induced VO<sub>2</sub> conduction for the applications of adaptive electromagnetic protection
A composite energy‐selective surface based on diode‐induced VO<sub>2</sub> conduction for the applications of adaptive electromagnetic protection Open
In this letter, a composite energy selective surface (CESS) using diode to induce VO 2 is proposed. The CESS is composed of periodic metal meshes connected with PIN diodes and VO 2 in rows and the CESS is embedded in a metal window. VO 2 c…
View article: A broadband reconfigurable frequency-selective surface in terahertz band based on different metal-insulator transition temperature of VO<sub>2</sub>
A broadband reconfigurable frequency-selective surface in terahertz band based on different metal-insulator transition temperature of VO<sub>2</sub> Open
In this paper, a broadband reconfigurable frequency-selective surface (FSS) in terahertz band based on different metal-insulator transition (MIT) temperature of vanadium dioxide (VO2) is proposed. By using different MIT temperature of VO2,…
View article: Novel filter material by glass fiber foam laying for nonwoven fabrics
Novel filter material by glass fiber foam laying for nonwoven fabrics Open
The needle punched nonwoven fabrics are widely used as the flue gas filter materials while continuous efforts have been made to improve the filtration efficiency in order to meet the low emission requirement. In this study, filter material…
View article: A Liquid Crystal-Modulated Metastructure Sensor for Biosensing
A Liquid Crystal-Modulated Metastructure Sensor for Biosensing Open
In this paper, a liquid crystal-modulated metastructure sensor (MS) is proposed that can detect the refractive index (RI) of a liquid and change the detection range under different applied voltages. The regulation of the detection range is…
View article: Toward Sub‐Terahertz: Space‐Time Coding Metasurface Transmitter for Wideband Wireless Communications
Toward Sub‐Terahertz: Space‐Time Coding Metasurface Transmitter for Wideband Wireless Communications Open
A space‐time coding metasurface (STCM) operating in the sub‐terahertz band to construct new‐architecture wireless communication systems is proposed. Specifically, a programmable STCM is designed with varactor‐diode‐tuned metasurface elemen…
View article: Defect identification in adhesive structures using multi-Feature fusion convolutional neural network
Defect identification in adhesive structures using multi-Feature fusion convolutional neural network Open
The interface-debonding defects of adhesive bonding structures may cause a reduction in bonding strength, which in turn affects the bonding quality of adhesive bonding samples. Hence, defect recognition in adhesive bonding structures is pa…
View article: Measurement of Stress Optical Coefficient for Silicone Adhesive Based on Terahertz Time Domain Spectroscopy
Measurement of Stress Optical Coefficient for Silicone Adhesive Based on Terahertz Time Domain Spectroscopy Open
The bonding structure is affected by environmental loads during use, causing internal stress in the adhesive layer, which leads to the debonding and expansion of the bonding layer. Therefore, it is important to accurately measure the stres…
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Table of Contents Open
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View article: Design and fabrication of the superconducting single-photon detector operating at the 5 - 10 micrometer wavelength band
Design and fabrication of the superconducting single-photon detector operating at the 5 - 10 micrometer wavelength band Open
High-performance mid-wave and long-wave infrared single-photon detectors not only have significant research value in the fields of infrared astronomy and defense technology, but are also challenging to be realized in the field of single-ph…
View article: Status and Prospects of Dual-Gradient Drilling Technologies in Deep-Water Wells
Status and Prospects of Dual-Gradient Drilling Technologies in Deep-Water Wells Open
OPINION article Front. Energy Res., 01 June 2022Sec. Advanced Clean Fuel Technologies https://doi.org/10.3389/fenrg.2022.920178
View article: Design and fabrication of superconducting single-photon detector operating in 5–10 μm wavelength band
Design and fabrication of superconducting single-photon detector operating in 5–10 μm wavelength band Open
High-performance mid-wave and long-wave infrared single-photon detectors not only have significant research value in the fields of infrared astronomy and defense technology, but also are the challenges in the field of single-photon detecti…
View article: Fabrication of superconducting niobium nitride nanowire with high aspect ratio for X-ray photon detection
Fabrication of superconducting niobium nitride nanowire with high aspect ratio for X-ray photon detection Open
The niobium nitride (NbN) nanowires fabricated with the high-quality ultra-thin NbN film with a thickness of 3 nm–6 nm were widely used for single photon detectors. These nanowires had a low aspect ratio, less than 1:20. However, increasin…