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学者姓名：王群
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Abstract ：
Homogeneously dispersed ultrafine CoFe2O4 nanoparticles embedded within N-doped carbon nanofibers (named as CFO@NCNFs) have been fabricated via electrospinning and following heat treatment procedures. The dielectric and magnetic parameters of CFO@NCNFs/paraffin wax composites are regulated through adjusting the concentration of CoFe2O4 to obtain good impedance matching and excellent microwave absorption (MA) properties. Benefiting from the unique structure involving CoFe2O4 @onion-like carbon nanospheres and 3D conductive NCNFs network, as well as the synergistic mechanism between ultrasmall magnetic CoFe2O4 nano-particles and light mass dielectric NCNFs. The CFO@NCNFs-5 exhibit outstanding MA properties at only 20 wt% filler loading and minimum reflection loss (RL) achieves-47.9 dB (surpass 99.9% MA) at 9.2 GHz with a thin thickness of merely 1.7 mm, and the corresponding effective absorption bandwidth (RL <-10 dB) achieves 5.4 GHz (6.5-11.9 GHz). Moreover, the effective absorption bandwidth (EAB) can be obtained in multiband (3.9-18.0 GHz) by adjusting the thickness of sample layer. Our work indicates that the appropriate incorporation of ultrafine CoFe2O4 nanoparticles encapsulated in NCNFs is a versatile and high-efficiency strategy to integrate lightweight and excellent properties of magnetic carbon-based absorbers.
Keyword ：
CoFe 2 O 4 nanoparticles CoFe 2 O 4 nanoparticles N-doped N-doped Carbon nanofibers Carbon nanofibers Electromagnetic Electromagnetic Microwave absorption Microwave absorption
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| GB/T 7714 | Li, Xiaoqiang , Yu, Chuanjin , Guan, Guangguang et al. Magnetic nitrogen-doped carbon nanofibers containing homogeneously dispersed CoFe2O4 nanoparticles with lightweight and efficient microwave absorption performance [J]. | JOURNAL OF ALLOYS AND COMPOUNDS , 2023 , 965 . |
| MLA | Li, Xiaoqiang et al. "Magnetic nitrogen-doped carbon nanofibers containing homogeneously dispersed CoFe2O4 nanoparticles with lightweight and efficient microwave absorption performance" . | JOURNAL OF ALLOYS AND COMPOUNDS 965 (2023) . |
| APA | Li, Xiaoqiang , Yu, Chuanjin , Guan, Guangguang , Wang, Ping , Zheng, Xiaolei , Shen, Chenjie et al. Magnetic nitrogen-doped carbon nanofibers containing homogeneously dispersed CoFe2O4 nanoparticles with lightweight and efficient microwave absorption performance . | JOURNAL OF ALLOYS AND COMPOUNDS , 2023 , 965 . |
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Abstract ：
Based on Mie scattering theory, fractal theory, the generalized multiparticle Mie model and the attenuated total reflectance infrared spectroscopy method, this paper aimed to explore the influence of different distribution morphologies of semiconductor nanoparticles on their radiation properties. The results revealed that (1) the symmetry and fluctuation amplitude of the scattering direction of the SiC elementary particles, with a diameter of 100 nm, and the cluster particles were related to the wavelength, particle size and agglomeration state. (2) The particle size distribution had a significant effect on the spectral extinction performance of the SiC particles, especially when lambda > 10 mu m, which can be greatly strengthened by increasing the proportion of large-scale particles. (3) The influence of SiC particle clusters on their spectral extinction was directly related to the cluster size and wavelength. When lambda < 10 mu m, small-scale cluster particles showed lower extinction performances; however, the absorption and scattering factors increased with the increase in cluster size while lambda > 10 mu m, and the extinction performance significantly improved. In summary, the quantitative changes in the microscale and structure, as well as the distribution states, had a significant impact on the infrared spectral characteristics of the particles, and we expect to adjust the particle size distribution to obtain desired radiation properties.
Keyword ：
Mie scattering theory Mie scattering theory cluster particles cluster particles particle scattering particle scattering generalized multiparticle Mie theory generalized multiparticle Mie theory attenuated total reflectance infrared spectroscopy method attenuated total reflectance infrared spectroscopy method particle agglomeration particle agglomeration elementary particles elementary particles fractal theory fractal theory
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| GB/T 7714 | Li, Yanan , Wang, Qun , Wang, Xiaoli et al. Simulation and Testing of the Radiation Performance of SiC Particles with Different Distribution Morphologies [J]. | PHOTONICS , 2022 , 9 (5) . |
| MLA | Li, Yanan et al. "Simulation and Testing of the Radiation Performance of SiC Particles with Different Distribution Morphologies" . | PHOTONICS 9 . 5 (2022) . |
| APA | Li, Yanan , Wang, Qun , Wang, Xiaoli , Dong, Shikui . Simulation and Testing of the Radiation Performance of SiC Particles with Different Distribution Morphologies . | PHOTONICS , 2022 , 9 (5) . |
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Abstract ：
Photonic crystals can effectively modulate infrared spectral properties. In this paper, a one-dimensional photonic crystal of multilayer Cu/CuO is proposed to achieve selective infrared radiation within atmospheric windows. A multilayer Cu/CuO with a periodic structure was designed via the transfer matrix method and prepared via reactive sputtering. The results of emissivity measurement showed that the Cu/CuO one-dimensional photonic crystals with 2???4 periods and a certain thickness exhibited good infrared-selective properties, with average emissivities of 0.1 and 0.9 at wavelengths of 3???5 and 8???14 ??m, respectively; thus, the Cu/CuO onedimensional photonic crystals have potential applications as infrared spectral modulation materials.
Keyword ：
Reactive Sputtering Reactive Sputtering One-Dimensional Photonic Crystal One-Dimensional Photonic Crystal Selective Infrared Radiative Material Selective Infrared Radiative Material
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| GB/T 7714 | Li, Yongqing , Wang, Qun . Design and Infrared Spectral Modulation Properties of Cu/CuO One-Dimensional Photonic Crystals [J]. | SCIENCE OF ADVANCED MATERIALS , 2022 , 14 (2) : 372-382 . |
| MLA | Li, Yongqing et al. "Design and Infrared Spectral Modulation Properties of Cu/CuO One-Dimensional Photonic Crystals" . | SCIENCE OF ADVANCED MATERIALS 14 . 2 (2022) : 372-382 . |
| APA | Li, Yongqing , Wang, Qun . Design and Infrared Spectral Modulation Properties of Cu/CuO One-Dimensional Photonic Crystals . | SCIENCE OF ADVANCED MATERIALS , 2022 , 14 (2) , 372-382 . |
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Abstract ：
In this study, we prepared a streptavidin magnetic bead based on graphene-coated iron nitride magnetic beads (G@FeN-MB) and tried to use it for the enrichment of severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2). The outer shell of our magnetic bead was wrapped with multiple graphene sheets, and there is no report on the application of graphene to the magnetic-bead-coating material. First, the graphene shell of G@FeN-MB was oxidized by a modified Hummer method so as to generate the carboxyl groups required for the coupling of streptavidin (SA) on the surface of the magnetic beads. X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, Fourier transform infrared spectroscopy (FTIR), and transmission electron microscopy (TEM) were used to characterize the oxidized G@FeN-MB (GO@FeN-MB). Streptavidin was then linked to the surface of the GO@FeN-MB by coupling the amino of the streptavidin with the carboxyl on the magnetic beads by carbodiimide method; thus, the streptavidin magnetic beads (SAMBs) were successfully prepared. To prove the practicality of the SAMBs, biotinylated SARS-CoV-2 S1 antibody was linked with it to respectively capture SARS-CoV-2 Spike-protein-coupled polystyrene beads (S-PS) and pseudovirus with S-protein expressed. Microplate reader and fluorescence microscope results show that the SAMBs can effectively enrich viruses. In conclusion, the preparation of SAMBs with G@FeN-MB is feasible and has potential for application in the field of virus enrichment.
Keyword ：
graphene graphene streptavidin magnetic beads streptavidin magnetic beads SARS-CoV-2 SARS-CoV-2 virus enrichment virus enrichment
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| GB/T 7714 | Li, Jianxing , Wang, Minglian , Jia, Runqing et al. Graphene-Coated Iron Nitride Streptavidin Magnetic Beads: Preparation and Application in SARS-CoV-2 Enrichment [J]. | MAGNETOCHEMISTRY , 2022 , 8 (4) . |
| MLA | Li, Jianxing et al. "Graphene-Coated Iron Nitride Streptavidin Magnetic Beads: Preparation and Application in SARS-CoV-2 Enrichment" . | MAGNETOCHEMISTRY 8 . 4 (2022) . |
| APA | Li, Jianxing , Wang, Minglian , Jia, Runqing , Ma, Zhuang , Zhang, Xiaoxu , Li, Jintao et al. Graphene-Coated Iron Nitride Streptavidin Magnetic Beads: Preparation and Application in SARS-CoV-2 Enrichment . | MAGNETOCHEMISTRY , 2022 , 8 (4) . |
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Abstract ：
To develop a new material with low emissivity in the range of the 3???5 ??m band, the present work reports a CuNiAg alloy/Ni???Ag-doped Cu4O3 one-dimensional photonic crystal prepared by reactive sputtering and correlates the effect of nickel and silver on the structural and infrared spectral properties. The morphology, structure and infrared spectral properties of the CuNiAg alloy/Ni???Ag-doped Cu4O3 1DPC were studied by FESEM, XRD, and an IR-2 dual-wavelength emissivity instrument. The doping of Ni and Ag impeded phase formation, and the Cu2O and Cu4O3 phases only appeared under the same process conditions. The doped elements caused lattice contraction and decreased the thickness of the 1DPC, which was the most important factor affecting the emissivity. The results of the emissivity measurement showed that the single period film thickness of Cu80Ni15Ag5/Ni???Ag-doped Cu4O3 was close to 280 nm, and the number of periods was 2???4. Therefore, the Cu80Ni15Ag5/Ni???Ag-doped Cu4O3 1DPC had good selective infrared properties with an average emissivity of less than 0.1 in the 3???5 ??m band and larger than 0.94 in the 8???14 ??m band; thus, this 1DPC is IP 14 98 160 66 On: Wed 18 May 2022 06:36:21 expected to be used as an infrared sectral modulation material.
Keyword ：
Reactive Sputtering Reactive Sputtering Periodic Structure Multilayer Film Periodic Structure Multilayer Film Selective Infrared Radiative Material Selective Infrared Radiative Material
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| GB/T 7714 | Li, Yongqing , Wang, Qun , Jin, Xin et al. Structural and Infrared Spectral Modulation Properties of a CuNiAg Alloy/Ni-Ag-Doped Cu4O3 One-Dimensional Photonic Crystal [J]. | JOURNAL OF NANOELECTRONICS AND OPTOELECTRONICS , 2022 , 17 (1) : 177-186 . |
| MLA | Li, Yongqing et al. "Structural and Infrared Spectral Modulation Properties of a CuNiAg Alloy/Ni-Ag-Doped Cu4O3 One-Dimensional Photonic Crystal" . | JOURNAL OF NANOELECTRONICS AND OPTOELECTRONICS 17 . 1 (2022) : 177-186 . |
| APA | Li, Yongqing , Wang, Qun , Jin, Xin , Yu, Yunfei . Structural and Infrared Spectral Modulation Properties of a CuNiAg Alloy/Ni-Ag-Doped Cu4O3 One-Dimensional Photonic Crystal . | JOURNAL OF NANOELECTRONICS AND OPTOELECTRONICS , 2022 , 17 (1) , 177-186 . |
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Abstract ：
Double perovskite compounds (DPCs) have gained much more attention due to their versatile character in the fields of electronics and spintronics. Using density functional theory (DFT) we investigated the electronic, magnetic and optical properties of DPC La2BB ' O-6 where B = Cr, Sc and V and B ' = Co, Ni. The electronic band gaps suggest these compounds are half-metallic (HF) semiconductors in the spin-up channel and metallic in the spin-down channel. Magnetic properties suggest these are ferromagnetic in nature, so all DPCs are half-metallic ferromagnetic (HM-FM). Furthermore, the compound La2CrCoO6 shows outstanding electronic and optical properties, so it can be used in optoelectronic/spintronic devices.
Keyword ：
DFT DFT double perovskite double perovskite optical conductivity optical conductivity electronic electronic magnetic magnetic
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| GB/T 7714 | Rehman, Mehtab Ur , Wang, Qun , Yu, Yunfei . Electronic, Magnetic and Optical Properties of Double Perovskite Compounds: A First Principle Approach [J]. | CRYSTALS , 2022 , 12 (11) . |
| MLA | Rehman, Mehtab Ur et al. "Electronic, Magnetic and Optical Properties of Double Perovskite Compounds: A First Principle Approach" . | CRYSTALS 12 . 11 (2022) . |
| APA | Rehman, Mehtab Ur , Wang, Qun , Yu, Yunfei . Electronic, Magnetic and Optical Properties of Double Perovskite Compounds: A First Principle Approach . | CRYSTALS , 2022 , 12 (11) . |
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Abstract ：
The dielectric constant of CCTO materials can be as high as 10(4), which makes it suitable for use in electronic devices but the high dielectric loss limits its application. In this paper, a series of Sr and Zr co-doped CCTO ceramics having the formula Ca0.8Sr0.2Cu3Ti4-xZrxO12 (x = 0.1, 0.2, 0.3, 0.4) were obtained via a solid-state reaction technique. We force the effect of the Zr content on the phase composition, microstructure, cationic valence states, impedance, and dielectric properties of the as-prepared ceramics to reduce dielectric loss. The results demonstrate that Sr and Zr co-doping increases dielectric constant and reduces dielectric loss simultaneously, and the maximum dielectric constant (1.87 x 10(5), 1 Hz) and minimum dielectric loss (0.43, 10(2) Hz) are obtained when x = 0.3. Mixed Cu+/Cu2+ and Ti3+/Ti4+ valence states are observed to coexist in the co-doped material lattices, which promote dipole polarization, and thereby increase the dielectric constant of the ceramics. The dielectric properties of the materials are analyzed according to the internal barrier layer capacitance model, which elucidates the contributions of the grains and grain boundaries to dielectric performance. The maximum grain boundary resistance (3.7 x 10(5) omega) is obtained for x = 0.3, which contributes toward the minimum dielectric loss (0.43) obtained for this ceramic at a frequency less than 1 kHz. The average grain sizes of the samples decrease with increasing Zr content, which is the primary factor increasing the grain boundary resistance of the co-doped ceramics.
Keyword ：
dielectric properties dielectric properties IBLC IBLC CaCu3Ti4O12 (CCTO) CaCu3Ti4O12 (CCTO) co-doped co-doped mixed valence structure mixed valence structure
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| GB/T 7714 | Yu, Yunfei , Wang, Qun , Li, Yongqing et al. Sr and Zr Co-Doped CaCu3Ti4O12 Ceramics with Improved Dielectric Properties [J]. | MATERIALS , 2022 , 15 (12) . |
| MLA | Yu, Yunfei et al. "Sr and Zr Co-Doped CaCu3Ti4O12 Ceramics with Improved Dielectric Properties" . | MATERIALS 15 . 12 (2022) . |
| APA | Yu, Yunfei , Wang, Qun , Li, Yongqing , Rehman, Mehtab Ur , Khan, Waheed Qamar . Sr and Zr Co-Doped CaCu3Ti4O12 Ceramics with Improved Dielectric Properties . | MATERIALS , 2022 , 15 (12) . |
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Abstract ：
电磁永磁互调解锁装置仿真与设计
Keyword ：
磁路 磁路 电磁永磁互调 电磁永磁互调 有限元分析 有限元分析
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| GB/T 7714 | 金鑫 , 陈树君 , 郭海霞 et al. 电磁永磁互调解锁装置仿真与设计 [J]. | 金鑫 , 2021 , 54 (4) : 16-20 . |
| MLA | 金鑫 et al. "电磁永磁互调解锁装置仿真与设计" . | 金鑫 54 . 4 (2021) : 16-20 . |
| APA | 金鑫 , 陈树君 , 郭海霞 , 丁叁叁 , 张敏 , 唐章宏 et al. 电磁永磁互调解锁装置仿真与设计 . | 金鑫 , 2021 , 54 (4) , 16-20 . |
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Abstract ：
Immunomagnetic beads (IMBs) for cell sorting are universally used in medical and biological fields. At present, the IMBs on the market are ferrite coated with a silicon shell. Based on a new type of magnetic material, the graphene coated iron nitride magnetic particle (G@FeN-MP), which we previously reported, we prepared a novel IMB, a graphene oxide coated iron nitride immune magnetic bead (GO@FeN-IMBs), and explored its feasibility for cell sorting. First, the surface of the G@FeN-MP was oxidized to produce oxygen-containing groups as carboxyl, etc. by the optimized Hummers' method, followed by a homogenization procedure to make the particles uniform in size and dispersive. The carboxy groups generated were then condensed and coupled with anti-CD3 antibodies by the carbodiimide method to produce an anti-CD3-GO@FeN-IMB after the coupling efficacy was proved by bovine serum albumin (BSA) and labeled antibodies. Finally, the anti-CD3-GO@FeN-IMBs were incubated with a cell mixture containing human T cells. With the aid of a magnetic stand, the T cells were successfully isolated from the cell mixture. The isolated T cells turned out to be intact and could proliferate with the activation of the IMBs. The results show that the G@FeN-MP can be modified for IMB preparation, and the anti-CD3-GO@FeN-IMBs we prepared can potentially separate T cells.
Keyword ：
immune magnetic beads immune magnetic beads graphene oxide graphene oxide iron nitride magnetic particles iron nitride magnetic particles T cell separation T cell separation
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| GB/T 7714 | Liang, Tianya , Li, Jianxing , Liu, Xiao et al. Preparation of CD3 Antibody-Conjugated, Graphene Oxide Coated Iron Nitride Magnetic Beads and Its Preliminary Application in T Cell Separation [J]. | MAGNETOCHEMISTRY , 2021 , 7 (5) . |
| MLA | Liang, Tianya et al. "Preparation of CD3 Antibody-Conjugated, Graphene Oxide Coated Iron Nitride Magnetic Beads and Its Preliminary Application in T Cell Separation" . | MAGNETOCHEMISTRY 7 . 5 (2021) . |
| APA | Liang, Tianya , Li, Jianxing , Liu, Xiao , Ma, Zhuang , Su, Xiaojin , Meng, Xiangjiao et al. Preparation of CD3 Antibody-Conjugated, Graphene Oxide Coated Iron Nitride Magnetic Beads and Its Preliminary Application in T Cell Separation . | MAGNETOCHEMISTRY , 2021 , 7 (5) . |
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Abstract ：
为研究介质材料40～110 GHz频段下的电磁参数,搭建了自由空间测量系统并进行TRL(直通、反射、传输线)校准,聚四氟乙烯标准样的电磁参数实际测量为■。测量结果及不确定分析结果显示,在40～110 GHz频段内基于该方法的测量系统具有较好的测量精度。
Keyword ：
不确定度分析 不确定度分析 TRL校准 TRL校准 电磁参数 电磁参数 自由空间法 自由空间法
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| GB/T 7714 | 冀元 , 唐章宏 , 李永卿 et al. 40～110 GHz介质材料自由空间法电磁参数测量 [J]. | 安全与电磁兼容 , 2021 , PageCount-页数: 6 (04) : 45-50 . |
| MLA | 冀元 et al. "40～110 GHz介质材料自由空间法电磁参数测量" . | 安全与电磁兼容 PageCount-页数: 6 . 04 (2021) : 45-50 . |
| APA | 冀元 , 唐章宏 , 李永卿 , 赵锐 , 郭荣斌 , 张娜 et al. 40～110 GHz介质材料自由空间法电磁参数测量 . | 安全与电磁兼容 , 2021 , PageCount-页数: 6 (04) , 45-50 . |
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