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学者姓名:阴翔宇
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Abstract :
The advancement of hydrogel-based epidermal sensors that integrate multifunctionality, high transparency, rapid processing, and heightened sensitivity is of significant interest. Herein, we present an efficient approach for the fabrication of flexible dual-mode epidermal sensors through the ultraviolet (UV)-curing 3-D printing of polyacrylamide (PAM)-based ionic hydrogels. The hydro-gel precursor incorporates sodium dodecyl sulfate (SDS) monomers to augment the water dispersibility of the 2,4,6-trimethylbenzoyl-diphenylphosphine oxide (TPO) photoinitiator, thereby substantially increasing the photocuring efficiency of the ionic hydrogel. As a result, the distinctive surface microstructures of PAM-based ionic hydrogels can be engineered for sensors with varying sensing modalities to improve detection performance. The piezoelectric tactile sensor, incorporating a concentric ring microstructure, demonstrates a sensitivity coefficient of 1.39 mV kPa(-1). Conversely, the resistive strain sensor, characterized by a high-density reticular hollow structure, exhibits the highest gauge factor of 24.87. Furthermore, each sensor modality demonstrates excellent temporal response and stability, confirming its applicability in motion monitoring and Morse code transmission.
Keyword :
3-D printing 3-D printing Conductivity Conductivity Curing Curing dual-mode sensing dual-mode sensing epidermal sensor epidermal sensor Epidermis Epidermis Hydrogels Hydrogels iontronic iontronic Microstructure Microstructure Monitoring Monitoring Sensitivity Sensitivity Sensor phenomena and characterization Sensor phenomena and characterization Sensors Sensors Three-dimensional printing Three-dimensional printing
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GB/T 7714 | Zhang, Yue , Lan, Ao , Xia, Yuanhao et al. 3-D Printing of PAM Hydrogel-Based Iontronic for Dual-Mode Epidermal Sensors [J]. | IEEE SENSORS JOURNAL , 2025 , 25 (8) : 12616-12626 . |
MLA | Zhang, Yue et al. "3-D Printing of PAM Hydrogel-Based Iontronic for Dual-Mode Epidermal Sensors" . | IEEE SENSORS JOURNAL 25 . 8 (2025) : 12616-12626 . |
APA | Zhang, Yue , Lan, Ao , Xia, Yuanhao , Yin, Xiangyu , He, Bingwei , Zhu, Pengli . 3-D Printing of PAM Hydrogel-Based Iontronic for Dual-Mode Epidermal Sensors . | IEEE SENSORS JOURNAL , 2025 , 25 (8) , 12616-12626 . |
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The natural porosity architectures, polar functional groups, low density, and biocompatibility of biomass carbon materials make them highly promising for the development of lightweight electromagnetic microwave absorbers. Sugarcane bagasse served as the raw material for this investigation, and sugarcane bagasse-derived carbon/FexOy was prepared using the in-situ growth method and temperature field-directed casting. By adjusting the content of ferrite hollow spheres, magnetic conduction losses and heterogeneous interfacial polarization losses are improved. Controlling the electrical conductivity losses and multiple scattering structures of biomass-derived carbon at different annealing temperatures, impedance matching is achieved through the synergistic operation of various loss mechanisms. BDC@C-1.2-750 exhibited a minimum reflection loss (RLmin) of-46.6 dB at a filler content of only 5 wt% and a thickness of 1.9 mm and obtained a maximum effective absorption bandwidth (EABmax) of 5.52 GHz at the same thickness. The ice template directional casting formed an orderly thermal conduction path, providing channels for phonon and electron transport, which is beneficial for the efficient heat dissipation of the microwave absorber. This finding thus offers a promising technique for creating ultra-lightweight microwave absorbers that facilitate heat dissipation.
Keyword :
Biomass carbon Biomass carbon Biomass-derived porous carbon Biomass-derived porous carbon Electromagnetic wave absorption Electromagnetic wave absorption Freeze casting Freeze casting Light weight Light weight
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GB/T 7714 | Zhou, Ting , Xu, Jing , Zhao, Hao et al. FexOy-decorated biomass-derived carbon: A lightweight electromagnetic wave absorber and thermal conductor [J]. | COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS , 2025 , 717 . |
MLA | Zhou, Ting et al. "FexOy-decorated biomass-derived carbon: A lightweight electromagnetic wave absorber and thermal conductor" . | COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS 717 (2025) . |
APA | Zhou, Ting , Xu, Jing , Zhao, Hao , Zhang, Chunni , Wei, Yifeng , Yin, Xiangyu et al. FexOy-decorated biomass-derived carbon: A lightweight electromagnetic wave absorber and thermal conductor . | COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS , 2025 , 717 . |
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The development of modern electronic devices necessitates the creation of materials that exhibit both excellent thermal conductivity and high electromagnetic wave absorption performance. This study focuses on the synthesis of a dual-functional composite material, Co-C@PDA@BN, by incorporating boron nitride (BN) onto a metal-organic framework (MOF)-derived Co-C core through the strong adhesion properties of polydopamine (PDA). The heterogeneous structural interface enhances interfacial polarization, thereby optimizing wave absorption. The thermal conductivity can be improved by adjusting the ratio of Co-C to BN. A composite with a Co-C to BN ratio of 1 : 5 shows a minimum reflection loss of -55.3 dB at 5 wt% and a thermal conductivity of 0.396 W m-1 K-1, while a ratio of 1 : 20 achieves a thermal conductivity value of 0.464 W m-1 K-1 with a minimum reflection loss of -44.9 dB, demonstrating the facile tunability of these two properties. This work provides a promising pathway via heterostructure design to balance thermal conductivity and wave absorption characteristics, which may offer guidance for advancing electronic device technology.
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GB/T 7714 | Chen, Feng , Zhao, Hao , Xiao, Longqiang et al. Hierarchical Co-C@PDA@BN/PAM composites: synergistic enhancement of microwave absorption and thermal conductivity through heterostructure design [J]. | JOURNAL OF MATERIALS CHEMISTRY C , 2025 , 13 (24) : 12407-12419 . |
MLA | Chen, Feng et al. "Hierarchical Co-C@PDA@BN/PAM composites: synergistic enhancement of microwave absorption and thermal conductivity through heterostructure design" . | JOURNAL OF MATERIALS CHEMISTRY C 13 . 24 (2025) : 12407-12419 . |
APA | Chen, Feng , Zhao, Hao , Xiao, Longqiang , Yin, Xiangyu , Zhao, Yulai , Lu, Zhen et al. Hierarchical Co-C@PDA@BN/PAM composites: synergistic enhancement of microwave absorption and thermal conductivity through heterostructure design . | JOURNAL OF MATERIALS CHEMISTRY C , 2025 , 13 (24) , 12407-12419 . |
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The development of diverse microstructures has substantially contributed to recent progress in high-performance electromagnetic wave (EMW) absorption materials, providing a versatile platform for the modulation of absorption properties. Exploring multidimensional microstructures and developing tailored and gentle strategies for their precise optimization can substantially address the current challenges posed by relatively unclear underlying mechanisms. Here, a series of 2D/1D heterogeneous NiO@PPy composites featuring hollow hierarchical microstructures are successfully synthesized using a straightforward strategy combining sacrificial templating with chemical oxidative polymerization. This strategy offers a facile and effective approach to fine-tune the microstructure by adjusting the thickness of the polypyrrole (PPy) coating. This enables the continuous optimization of the dielectric properties and specific microstructures to maximize EMW absorption. Remarkably, the optimized 2D/1D hierarchical hollow NiO@PPy composite demonstrates an ultrathin thickness of 2.3 mm, a wide effective absorption band spanning 5.89 GHz, and a strong absorption intensity of -71.65 dB at a minimal loading of only 10 wt.%. The proposed mild and controllable preparation strategy not only provides insights for further tailoring the optimal dielectric properties of specific structures to enhance the absorption capacity, but also enriches the exploration of the underlying absorption mechanisms from the perspective of microstructure regulation.
Keyword :
2D/1D hierarchical structure 2D/1D hierarchical structure dielectric loss dielectric loss EMW absorption and controllability EMW absorption and controllability PPy PPy
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GB/T 7714 | Yin, Xiangyu , Zheng, Zongrui , Chen, Yixuan et al. 2D/1D Hierarchical Hollow NiO@PPy Composites with Tunable Dielectric Properties for Enhanced Electromagnetic Wave Absorption [J]. | SMALL , 2025 , 21 (8) . |
MLA | Yin, Xiangyu et al. "2D/1D Hierarchical Hollow NiO@PPy Composites with Tunable Dielectric Properties for Enhanced Electromagnetic Wave Absorption" . | SMALL 21 . 8 (2025) . |
APA | Yin, Xiangyu , Zheng, Zongrui , Chen, Yixuan , Zhang, Yue , Hou, Linxi . 2D/1D Hierarchical Hollow NiO@PPy Composites with Tunable Dielectric Properties for Enhanced Electromagnetic Wave Absorption . | SMALL , 2025 , 21 (8) . |
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The adsorption and separation behaviors of CF₄/N₂ in Li-, Na-, and K-doped covalent organic frameworks (COFs) were investigated using GCMC simulations and DFT calculations. The results demonstrated that Li, Na, and K atoms could be stably incorporated into the COF structures, with binding energies ranging from −0.7358 to −1.3720 eV, ensuring the structural stability of the metal-doped COFs. Metal doping introduced additional adsorption sites, significantly enhancing the CF₄ adsorption performance. At 298 K and 100 kPa, Li-doped COFs exhibited the highest CF₄ adsorption capacity, reaching 5.55 mol/kg, a substantial improvement compared to the pristine COF-3PD (3.63 mol/kg). Furthermore, COF-3PD-Li achieved the highest CF₄/N₂ selectivity, with a selectivity ratio of 13.26, representing a 32% enhancement over the pristine COF-3PD. Interaction analysis showed that Li doping significantly enhanced the CF₄-framework interaction. These findings highlight the potential of Li-doped COFs as advanced materials for CF₄/N₂ separation. © 2025
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GB/T 7714 | Zhao, Rui , Shen, Kun , Yin, Xiangyu et al. Theoretical investigation of selective CF₄/N₂ adsorption by metal-doped two-dimensional COFs [J]. | Materials Today Communications , 2025 , 46 . |
MLA | Zhao, Rui et al. "Theoretical investigation of selective CF₄/N₂ adsorption by metal-doped two-dimensional COFs" . | Materials Today Communications 46 (2025) . |
APA | Zhao, Rui , Shen, Kun , Yin, Xiangyu , Lu, Zhen , Gao, Kunqi , Hou, Linxi . Theoretical investigation of selective CF₄/N₂ adsorption by metal-doped two-dimensional COFs . | Materials Today Communications , 2025 , 46 . |
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As one of the most potent greenhouse gases, SF6 has a significant economic and environmental impact on the purification and recovery of exhaust gases from the semiconductor industry. The adsorption and separation performance of SF6 on a two-dimensional covalent organic framework TAT-COFs-1-AB with different functional groups (-SO3H, -Et, -NH2, -OMe, -OH, -H) was investigated by using grand canonical Monte Carlo (GCMC) simulations and density functional theory (DFT) calculations. The results show that the adsorption at low pressure depends on the interactions between the SF6 and COF frameworks, while at high pressure it is mainly affected by the porosity. The highest adsorption capacity of 8.44 mmol/g (298 K, 100 kPa) is exhibited by TAT-COF-1-AB-H, which has the highest porosity. Chemical functionalization was found to be effective in enhancing the SF6/N-2 selectivity. Among all the functionalized COFs, TAT-COF-1-AB-NH2, with the highest specific surface area and strong heat of adsorption, showed the highest selectivity. The simulation of self-diffusion also shows consistent results with the GCMC simulation. The findings highlight that the adsorption capacity is influenced by substituent and porosity, with SF6 showing a consistent preference for adsorption at hollow sites, as evidenced by binding energy and charge transfer analyses.
Keyword :
DFT DFT functionalized COF functionalized COF GCMC GCMC SF6 adsorption SF6 adsorption
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GB/T 7714 | Shen, Kun , Ning, Junjie , Zhao, Rui et al. Two-dimensional ammonia-linked COF structures with different substituents for the adsorption and separation of sulfur hexafluoride: A theoretical study [J]. | INTERNATIONAL JOURNAL OF QUANTUM CHEMISTRY , 2024 , 124 (15) . |
MLA | Shen, Kun et al. "Two-dimensional ammonia-linked COF structures with different substituents for the adsorption and separation of sulfur hexafluoride: A theoretical study" . | INTERNATIONAL JOURNAL OF QUANTUM CHEMISTRY 124 . 15 (2024) . |
APA | Shen, Kun , Ning, Junjie , Zhao, Rui , Gao, Kunqi , Yin, Xiangyu , Hou, Linxi . Two-dimensional ammonia-linked COF structures with different substituents for the adsorption and separation of sulfur hexafluoride: A theoretical study . | INTERNATIONAL JOURNAL OF QUANTUM CHEMISTRY , 2024 , 124 (15) . |
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Flexible strain sensors have made great progress and been applied tentatively in recent years. However, there are still many challenges and problems hindering their widespread application, including incompatible high sensitivity and wide detection range, poor durability, and time-consuming fabrication procedures. In this work, a dual-nozzle-assisted one-step strategy for the fabrication of integrated flexible strain sensors is proposed. During the fabrication, Ecoflex and its composite multiwalled carbon nanotube (MWCNT)/Ecoflex were extruded and thermally cured from the two nozzles, respectively. Taking advantage of the same base resin, the strain-sensitive and the insulating components in the fabricated flexible strain sensors are chemically bonded firmly and form an integrated device. The fabricated sensor exhibits good performance in terms of high gauge factor (GF = 165.3), good stability, low hysteresis, fast response time (60 ms), wide detection range (0%-300% strain), and ultralow detection limit (0.1% strain), showing promising applications in health monitoring and human-computer interaction.
Keyword :
Capacitive sensors Capacitive sensors Dual-nozzle printing Dual-nozzle printing flexible flexible Ink Ink integrated sensor integrated sensor Optical sensors Optical sensors Printing Printing Sensitivity Sensitivity Sensor phenomena and characterization Sensor phenomena and characterization Sensors Sensors strain sensor strain sensor
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GB/T 7714 | Zhong, Faxin , Chen, Shiqi , Chen, Shuoyuan et al. Dual-Nozzle Extrusion Printing of Highly Sensitive and Durable Strain Sensor Based on MWCNT/Ecoflex Composites [J]. | IEEE SENSORS JOURNAL , 2023 , 23 (7) : 6563-6570 . |
MLA | Zhong, Faxin et al. "Dual-Nozzle Extrusion Printing of Highly Sensitive and Durable Strain Sensor Based on MWCNT/Ecoflex Composites" . | IEEE SENSORS JOURNAL 23 . 7 (2023) : 6563-6570 . |
APA | Zhong, Faxin , Chen, Shiqi , Chen, Shuoyuan , Zhang, Yue , Yin, Xiangyu , He, Bingwei . Dual-Nozzle Extrusion Printing of Highly Sensitive and Durable Strain Sensor Based on MWCNT/Ecoflex Composites . | IEEE SENSORS JOURNAL , 2023 , 23 (7) , 6563-6570 . |
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Polyimide (PI) is widely used in the communication field benefited from its low dielectric properties and good electrical insulating properties, however, its low thermal conductivity simultaneously limits its application in electronic packaging. Delayed heat dissipation can exacerbate the thermal stress generated by device operation to damage electronic structures, thereby affecting work efficiency. As a result, it is necessary to improve the thermal conductivity of polyimide and maintain excellent dielectric performance. Here, we demonstrate the polyimide (BPDA-ODA) composites with ordered structure are prepared by filling commercial polyimides with aramid nanofibers connection nitrides greatly improve thermal conductivity and maintain the low dielectric loss. When the filling amount of SBN@CN is 30 wt%, the thermal conductivity increases to 1.162 W/mK, which is 8 times higher than that of pure PI (0.0147 W/mK). Moreover, thermal stability and mechanical properties are maintained, realizing that the dielectric constant is about 3.81 and the dielectric loss is as low as 0.0034 at 100 MHz, which endows a new insight for the application of polyimide in electronic packaging.
Keyword :
boron nitride boron nitride composites composites dielectric loss dielectric loss polyimide polyimide thermal conductivity thermal conductivity
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GB/T 7714 | Song, Qianyu , Wang, Mengqiu , Lai, Yiming et al. Preparation and properties of branch-leaf-like polyimide composite films with high thermal conductivity and low dielectric loss [J]. | JOURNAL OF APPLIED POLYMER SCIENCE , 2023 , 140 (41) . |
MLA | Song, Qianyu et al. "Preparation and properties of branch-leaf-like polyimide composite films with high thermal conductivity and low dielectric loss" . | JOURNAL OF APPLIED POLYMER SCIENCE 140 . 41 (2023) . |
APA | Song, Qianyu , Wang, Mengqiu , Lai, Yiming , Wang, Qihong , Yin, Xiangyu , Hou, Linxi . Preparation and properties of branch-leaf-like polyimide composite films with high thermal conductivity and low dielectric loss . | JOURNAL OF APPLIED POLYMER SCIENCE , 2023 , 140 (41) . |
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Boosting the dissociation of excitons is essential to enhance the photocatalytic efficiency. However, the relationship between the structure of the catalyst and the exciton effect on the photocatalytic activity is still unclear as the main problem. Here, it is proposed that as a descriptive factor, an experimentally measurable dielectric constant (& epsilon;(r)) is available to quantitatively describe its relationship with exciton binding energy (E-b) and photocatalytic activity. With tuning the linker of covalent organic frameworks (COFs), the "air gap" structure is oriented to shrink, leading to an increased & epsilon;(r) of COFs and a lower E-b to facilitate exciton dissociation. Meanwhile, taking "water-/oxygen-fueled" photo-induced electron transfer reversible addition-fragmentation chain transfer (PET-RAFT) polymerization as a demonstration platform, it can be seen that COFs with a small "air gap" structure have relatively superior photocatalytic activity. This provides important implications for the evolution of efficient photocatalysts.
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GB/T 7714 | Yang, Hongjie , Lu, Zhen , Yin, Xiangyu et al. Influence laws of air gap structure manipulation of covalent organic frameworks on dielectric properties and exciton effects for photopolymerization [J]. | CHEMICAL SCIENCE , 2023 , 14 (30) : 8095-8102 . |
MLA | Yang, Hongjie et al. "Influence laws of air gap structure manipulation of covalent organic frameworks on dielectric properties and exciton effects for photopolymerization" . | CHEMICAL SCIENCE 14 . 30 (2023) : 8095-8102 . |
APA | Yang, Hongjie , Lu, Zhen , Yin, Xiangyu , Wu, Shengjin , Hou, Linxi . Influence laws of air gap structure manipulation of covalent organic frameworks on dielectric properties and exciton effects for photopolymerization . | CHEMICAL SCIENCE , 2023 , 14 (30) , 8095-8102 . |
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本发明公开了一种可重复使用于催化环氧化物与二氧化碳环加成的有机多孔聚合物及其制备方法。将芳香醛类化合物、溴化乙锭和反应溶剂混合均匀;加入乙酸,在加热负压条件下反应;在室温下离心,洗涤,真空干燥得到所述的有机多孔聚合物。该聚合物在温和条件下能够催化环氧化物与二氧化碳进行环加成反应生成环状碳酸酯,并通过高速离心实现与产物分离,还可重复使用,为环氧化物与二氧化碳环加成的非均相催化剂提供更多的选择性。
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GB/T 7714 | 肖龙强 , 赖艺明 , 杨植舜 et al. 一种催化环氧化物与二氧化碳环加成的有机多孔聚合物 : CN202111344010.3[P]. | 2021-11-14 00:00:00 . |
MLA | 肖龙强 et al. "一种催化环氧化物与二氧化碳环加成的有机多孔聚合物" : CN202111344010.3. | 2021-11-14 00:00:00 . |
APA | 肖龙强 , 赖艺明 , 杨植舜 , 邓称怀 , 胡从意 , 侯琳熙 et al. 一种催化环氧化物与二氧化碳环加成的有机多孔聚合物 : CN202111344010.3. | 2021-11-14 00:00:00 . |
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